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| author | Yuriy Andamasov <yuriy@vyos.io> | 2026-05-10 17:19:31 +0300 |
|---|---|---|
| committer | Yuriy Andamasov <yuriy@vyos.io> | 2026-05-10 17:19:31 +0300 |
| commit | 3fd1787d50dda76619647dd95ea6e1d421204734 (patch) | |
| tree | 3e4f5341e2b4c5618ba1fa6b52a5cda63c4c1c29 /docs/configuration/vpn/ipsec | |
| parent | d7e63e1923814a791dadf93453e8c090d26ca896 (diff) | |
| download | vyos-documentation-3fd1787d50dda76619647dd95ea6e1d421204734.tar.gz vyos-documentation-3fd1787d50dda76619647dd95ea6e1d421204734.zip | |
chore: remove RST swap mechanism, archive rst-*.rst under docs/_rst_legacy/
The swap mechanism (RST-as-fallback for migrated MD pages) is dormant —
docs/_rst_overrides.txt has been empty since the MyST flip trio
(#1899/#1900/#1901) landed in May 2026. The mechanism's surface area
(scripts/swap_sources.py, its 245-line test, RTD pre/post hooks,
Makefile glue, conf.py dynamic loader) is dead weight, and the
rst-*.rst shadows scattered across the source tree cause Context7's
parser to misclassify the project as RST.
Changes:
- Move 253 rst-*.rst shadow files into docs/_rst_legacy/ preserving
subdirectory structure. They remain in the repo for reference; Sphinx
excludes the folder via exclude_patterns; Context7 excludes it via
excludeFolders.
- Strip swap_sources.py invocation from docs/Makefile (swap/restore
targets, : swap deps, trap chains).
- Strip jobs: pre_build/post_build block from .readthedocs.yml.
- Strip rst-*.rst exclude entry and the _md_exclude.txt loader from
docs/conf.py; replace with a single _rst_legacy exclude.
- Delete scripts/swap_sources.py, tests/test_swap_sources.py,
docs/_rst_overrides.txt.
- Update context7.json: add docs/_rst_legacy to excludeFolders;
fix stale "Branch current tracks…" rule to "Branch rolling tracks…"
(default branch was renamed 2026-05-10).
- Update AGENTS.md: drop the "RST override mechanism" section and the
test-runner snippet for the deleted test; describe _rst_legacy as
archive only.
Verified: sphinx-build -b html with --keep-going produces identical
warning set (68 unique), identical sitemap entry count (257), identical
llms.txt entry count (22), zero rst-* URLs in any artifact.
🤖 Generated by [robots](https://vyos.io)
Diffstat (limited to 'docs/configuration/vpn/ipsec')
| -rw-r--r-- | docs/configuration/vpn/ipsec/rst-index.rst | 15 | ||||
| -rw-r--r-- | docs/configuration/vpn/ipsec/rst-ipsec_general.rst | 407 | ||||
| -rw-r--r-- | docs/configuration/vpn/ipsec/rst-remoteaccess_ipsec.rst | 187 | ||||
| -rw-r--r-- | docs/configuration/vpn/ipsec/rst-site2site_ipsec.rst | 763 | ||||
| -rw-r--r-- | docs/configuration/vpn/ipsec/rst-troubleshooting_ipsec.rst | 330 |
5 files changed, 0 insertions, 1702 deletions
diff --git a/docs/configuration/vpn/ipsec/rst-index.rst b/docs/configuration/vpn/ipsec/rst-index.rst deleted file mode 100644 index 973c76de..00000000 --- a/docs/configuration/vpn/ipsec/rst-index.rst +++ /dev/null @@ -1,15 +0,0 @@ -##### -IPsec -##### - - -.. toctree:: - :maxdepth: 1 - :includehidden: - - ipsec_general - site2site_ipsec - remoteaccess_ipsec - troubleshooting_ipsec - - diff --git a/docs/configuration/vpn/ipsec/rst-ipsec_general.rst b/docs/configuration/vpn/ipsec/rst-ipsec_general.rst deleted file mode 100644 index 3d21b81d..00000000 --- a/docs/configuration/vpn/ipsec/rst-ipsec_general.rst +++ /dev/null @@ -1,407 +0,0 @@ -.. _ipsec_general: - -######################### -IPsec General Information -######################### - -*********************** -Information about IPsec -*********************** - -IPsec is the framework used to secure data. -IPsec accomplishes these goals by providing authentication, -encryption of IP network packets, key exchange, and key management. -VyOS uses Strongswan package to implement IPsec. - -**Authentication Header (AH)** is defined in :rfc:`4302`. It creates -a hash using the IP header and data payload, and prepends it to the -packet. This hash is used to validate that the data has not been -changed during transfer over the network. - -**Encapsulating Security Payload (ESP)** is defined in :rfc:`4303`. -It provides encryption and authentication of the data. - - -There are two IPsec modes: - **IPsec Transport Mode**: - In transport mode, an IPSec header (AH or ESP) is inserted - between the IP header and the upper layer protocol header. - - **IPsec Tunnel Mode:** - In tunnel mode, the original IP packet is encapsulated in - another IP datagram, and an IPsec header (AH or ESP) is - inserted between the outer and inner headers. - -.. figure:: /_static/images/ESP_AH.* - :scale: 80 % - :alt: AH and ESP in Transport Mode and Tunnel Mode - -*************************** -IKE (Internet Key Exchange) -*************************** -The default IPsec method for secure key negotiation is the Internet Key -Exchange (IKE) protocol. IKE is designed to provide mutual authentication -of systems, as well as to establish a shared secret key to create IPsec -security associations. A security association (SA) includes all relevant -attributes of the connection, including the cryptographic algorithm used, -the IPsec mode, the encryption key, and other parameters related to the -transmission of data over the VPN connection. - -IKEv1 -===== - -IKEv1 is the older version and is still used today. Nowadays, most -manufacturers recommend using IKEv2 protocol. - -IKEv1 is described in the next RFCs: :rfc:`2409` (IKE), :rfc:`3407` -(IPsec DOI), :rfc:`3947` (NAT-T), :rfc:`3948` (UDP Encapsulation -of ESP Packets), :rfc:`3706` (DPD) - -IKEv1 operates in two phases to establish these IKE and IPsec SAs: - * **Phase 1** provides mutual authentication of the IKE peers and - establishment of the session key. This phase creates an IKE SA (a - security association for IKE) using a DH exchange, cookies, and an - ID exchange. Once an IKE SA is established, all IKE communication - between the initiator and responder is protected with encryption - and an integrity check that is authenticated. The purpose of IKE - phase 1 is to facilitate a secure channel between the peers so that - phase 2 negotiations can occur securely. IKE phase 1 offers two modes: - Main and Aggressive. - - * **Main Mode** is used for site-to-site VPN connections. - - * **Aggressive Mode** is used for remote access VPN connections. - - * **Phase 2** provides for the negotiation and establishment of the - IPsec SAs using ESP or AH to protect IP data traffic. - -IKEv2 -===== - -IKEv2 is described in :rfc:`7296`. The biggest difference between IKEv1 and -IKEv2 is that IKEv2 is much simpler and more reliable than IKEv1 because -fewer messages are exchanged during the establishment of the VPN and -additional security capabilities are available. - - -IKE Authentication -================== - -VyOS supports 3 authentication methods. - * **Pre-shared keys**: In this method, both peers of the IPsec - tunnel must have the same preshared keys. - * **Digital certificates**: PKI is used in this method. - * **RSA-keys**: If the RSA-keys method is used in your IKE policy, - you need to make sure each peer has the other peer’s public keys. - -************************* -DPD (Dead Peer Detection) -************************* - -This is a mechanism used to detect when a VPN peer is no longer active. -This mechanism has different algorithms in IKEv1 and IKEv2 in VyOS. -DPD Requests are sent as ISAKMP R-U-THERE messages and DPD Responses -are sent as ISAKMP R-U-THERE-ACK messages. In IKEv1, DPD sends messages -every configured interval. The remote peer is considered unreachable -if no response to these packets is received within the DPD timeout. -In IKEv2, DPD sends messages every configured interval. If one request -is not responded, Strongswan execute its retransmission algorithm with -its timers. `IKEv2 Retransmission`_ - -********************************* -Post-Quantum Preshared Keys (PPK) -********************************* - -Post-Quantum Preshared Keys help provide some quantum resistance to IPSec -tunnels when a post-quantum key exchange algorithm such as ML-KEM is not -available. The use of PPKs in IKEv2 is described in :rfc:`8784`. - -.. cfgmod:: edit vpn authentication ppk <name> - -PPKs can be configued within VyOS under the `vpn ipsec authentication ppk` -config. - -.. cfgmod:: set vpn authentication ppk <name> secret-type <plaintext|hex|base64> - -PPKs need an id and a secret value. The ID and the secret must match if PPKs are -required for a successful IPsec connection. The secret can be plain text, a -hex value, or a Base64 value. The default is plain text. If using another -type of value, you must define the secret type. - -.. cfgmod:: set vpn ipsec site-to-site <name> ppk id <id> - -To use a PPK within a site-to-site or remote access connection, define the PPK -id under the connection. - -.. cfgmod:: set vpn ipsec site-to-site <name> ppk required - -Optionally, you can require the use of PPK to have a successful connection. - -.. cfgmod:: show vpn ipsec connections - -You can view the PPK column for information on if PPK is configured, and -if it is in use. The output is in the format of ``<configured> / <in use>``. -The options for configured are none if not conifugred, opt if configured -but optional, and req is configured and required. The in use will show yes -Possible values of the ``configured`` field are ``none`` if not -conifgured, ``opt`` if configured but optional, and ``req`` is -configured and required. The in use will show yes - - - - -***************** -Configuration IKE -***************** - -IKE (Internet Key Exchange) Attributes -====================================== - -VyOS IKE group has the next options: - -.. cfgcmd:: set vpn ipsec ike-group <name> close-action <action> - - Defines the action to take if the remote peer unexpectedly - closes a CHILD_SA: - - * **none** - Set action to none (default), - * **trap** - Installs a trap policy (IPsec policy without Security - Association) for the CHILD_SA and traffic matching these policies - will trigger acquire events that cause the daemon to establish the - required IKE/IPsec SAs. - * **start** - Tries to immediately re-create the CHILD_SA. - -.. cfgcmd:: set vpn ipsec ike-group <name> ikev2-reauth - - Whether rekeying of an IKE_SA should also reauthenticate - the peer. In IKEv1, reauthentication is always done. - Setting this parameter enables remote host re-authentication - during an IKE rekey. - -.. cfgcmd:: set vpn ipsec ike-group <name> key-exchange - - Which protocol should be used to initialize the connection - If not set both protocols are handled and connections will - use IKEv2 when initiating, but accept any protocol version - when responding: - - * **ikev1** - Use IKEv1 for Key Exchange. - * **ikev2** - Use IKEv2 for Key Exchange. - -.. cfgcmd:: set vpn ipsec ike-group <name> lifetime - - IKE lifetime in seconds <0-86400> (default 28800). - -.. cfgcmd:: set vpn ipsec ike-group <name> mode - - IKEv1 Phase 1 Mode Selection: - - * **main** - Use Main mode for Key Exchanges in the IKEv1 Protocol - (Recommended Default). - * **aggressive** - Use Aggressive mode for Key Exchanges in the IKEv1 - protocol aggressive mode is much more insecure compared to Main mode. - -.. stop_vyoslinter - -.. cfgcmd:: set vpn ipsec ike-group <name> proposal <number> dh-group <dh-group number> - - Dh-group. Default value is **2**. - -.. cfgcmd:: set vpn ipsec ike-group <name> proposal <number> encryption <encryption> - - Encryption algorithm. Default value is **aes128**. - -.. start_vyoslinter - -.. cfgcmd:: set vpn ipsec ike-group <name> proposal <number> hash <hash> - - Hash algorithm. Default value is **sha1**. - -.. cfgcmd:: set vpn ipsec ike-group <name> proposal <number> prf <prf> - - Pseudo-random function. - - -DPD (Dead Peer Detection) Configuration -======================================= - -.. cfgcmd:: set vpn ipsec ike-group <name> dead-peer-detection action <action> - - Action to perform for this CHILD_SA on DPD timeout. - - * **trap** - Installs a trap policy (IPsec policy without Security - Association), which will catch matching traffic and tries to - re-negotiate the tunnel on-demand. - * **clear** - Closes the CHILD_SA and does not take further action - (default). - * **restart** - Immediately tries to re-negotiate the CHILD_SA - under a fresh IKE_SA. - -.. stop_vyoslinter - -.. cfgcmd:: set vpn ipsec ike-group <name> dead-peer-detection interval <interval> - - Keep-alive interval in seconds <2-86400> (default 30). - -.. start_vyoslinter - -.. cfgcmd:: set vpn ipsec ike-group <name> dead-peer-detection timeout <timeout> - - Keep-alive timeout in seconds <2-86400> (default 120) **IKEv1 only** - -ESP (Encapsulating Security Payload) Attributes -=============================================== - -In VyOS, ESP attributes are specified through ESP groups. -Multiple proposals can be specified in a single group. - -VyOS ESP group has the next options: - -.. cfgcmd:: set vpn ipsec esp-group <name> compression - - Enables the IPComp(IP Payload Compression) protocol which allows - compressing the content of IP packets. - -.. cfgcmd:: set vpn ipsec esp-group <name> disable-rekey - - Do not locally initiate a re-key of the SA, remote peer must - re-key before expiration. - -.. cfgcmd:: set vpn ipsec esp-group <name> life-bytes <bytes> - - ESP life in bytes <1024-26843545600000>. Number of bytes - transmitted over an IPsec SA before it expires. - -.. cfgcmd:: set vpn ipsec esp-group <name> life-packets <packets> - - ESP life in packets <1000-26843545600000>. - Number of packets transmitted over an IPsec SA before it expires. - -.. cfgcmd:: set vpn ipsec esp-group <name> lifetime <timeout> - - ESP lifetime in seconds <30-86400> (default 3600). - How long a particular instance of a connection (a set of - encryption/authentication keys for user packets) should last, - from successful negotiation to expiry. - -.. cfgcmd:: set vpn ipsec esp-group <name> mode <mode> - - The type of the connection: - - * **tunnel** - Tunnel mode (default). - * **transport** - Transport mode. - -.. cfgcmd:: set vpn ipsec esp-group <name> pfs < dh-group> - - Whether Perfect Forward Secrecy of keys is desired on the - connection's keying channel and defines a Diffie-Hellman group for - PFS: - - * **enable** - Inherit Diffie-Hellman group from IKE group (default). - * **disable** - Disable PFS. - * **<dh-group>** - Defines a Diffie-Hellman group for PFS. - -.. stop_vyoslinter - -.. cfgcmd:: set vpn ipsec esp-group <name> proposal <number> encryption <encryption> - - Encryption algorithm. Default value is **aes128**. - -.. start_vyoslinter - -.. cfgcmd:: set vpn ipsec esp-group <name> proposal <number> hash <hash> - - Hash algorithm. Default value is **sha1**. - -Global IPsec Settings -===================== - -.. cfgcmd:: set vpn ipsec interface <name> - - Interface name to restrict outbound IPsec policies. There is a possibility - to specify multiple interfaces. If an interfaces are not specified, IPsec - policies apply to all interfaces. - - -.. cfgcmd:: set vpn ipsec log level <number> - - Level of logging. Default value is **0**. - -.. cfgcmd:: set vpn ipsec log subsystem <name> - - Subsystem of the daemon. - -Options -======= - -.. cfgcmd:: set vpn ipsec options disable-route-autoinstall - - Do not automatically install routes to remote - networks. - -.. cfgcmd:: set vpn ipsec options flexvpn - - Allows FlexVPN vendor ID payload (IKEv2 only). Send the Cisco - FlexVPN vendor ID payload (IKEv2 only), which is required in order to make - Cisco brand devices allow negotiating a local traffic selector (from - strongSwan's point of view) that is not the assigned virtual IP address if - such an address is requested by strongSwan. Sending the Cisco FlexVPN - vendor ID prevents the peer from narrowing the initiator's local traffic - selector and allows it to e.g. negotiate a TS of 0.0.0.0/0 == 0.0.0.0/0 - instead. This has been tested with a "tunnel mode ipsec ipv4" Cisco - template but should also work for GRE encapsulation. - -.. cfgcmd:: set vpn ipsec options interface <name> - - Interface Name to use. The name of the interface on which - virtual IP addresses should be installed. If not specified the addresses - will be installed on the outbound interface. - -.. cfgcmd:: set vpn ipsec options virtual-ip - - Allows the installation of virtual-ip addresses. - -IKEv2 Retransmission -==================== - -If the peer does not respond on DPD packet, the router starts the -retransmission procedure. - -The following formula is used to calculate the timeout: - -.. code-block:: none - - relative timeout = timeout * base ^ (attempts-1) - -.. cfgcmd:: set vpn ipsec options retransmission attempts - - Number of attempts before the peer is considered to be in the down state. - Default value is **5**. - -.. cfgcmd:: set vpn ipsec options retransmission base - - Base number of exponential backoff. Default value is **1.8**. - -.. cfgcmd:: set vpn ipsec options retransmission timeout - - Timeout in seconds before the first retransmission. Default value is **4**. - -Using the default values, packets are retransmitted as follows: - -+-----------+-------------+------------------+------------------+ -| Attempts | Formula | Relative timeout | Absolute timeout | -+-----------+-------------+------------------+------------------+ -| 1 | 4 * 1.8 ^ 0 | 4s | 4s | -+-----------+-------------+------------------+------------------+ -| 2 | 4 * 1.8 ^ 1 | 7s | 11s | -+-----------+-------------+------------------+------------------+ -| 3 | 4 * 1.8 ^ 2 | 13s | 24s | -+-----------+-------------+------------------+------------------+ -| 4 | 4 * 1.8 ^ 3 | 23s | 47s | -+-----------+-------------+------------------+------------------+ -| 5 | 4 * 1.8 ^ 4 | 42s | 89s | -+-----------+-------------+------------------+------------------+ -| peer down | 4 * 1.8 ^ 5 | 76s | 165s | -+-----------+-------------+------------------+------------------+ - - diff --git a/docs/configuration/vpn/ipsec/rst-remoteaccess_ipsec.rst b/docs/configuration/vpn/ipsec/rst-remoteaccess_ipsec.rst deleted file mode 100644 index 50499160..00000000 --- a/docs/configuration/vpn/ipsec/rst-remoteaccess_ipsec.rst +++ /dev/null @@ -1,187 +0,0 @@ -.. _remoteaccess_ipsec: - -############################ -IPSec IKEv2 Remote Access VPN -############################ - -.. TODO:: Convert raw command blocks in this file to cfgcmd/opcmd - directives for command coverage tracking. - -Internet Key Exchange version 2 (IKEv2) is a tunneling protocol, based on IPsec, -that establishes a secure VPN communication between VPN devices, and defines -negotiation and authentication processes for IPsec security associations (SAs). -It is often known as IKEv2/IPSec or IPSec IKEv2 remote-access — or road-warriors -as others call it. - -Key exchange and payload encryption is done using IKE and ESP proposals as known -from IKEv1 but the connections are faster to establish, more reliable, and also -support roaming from IP to IP (called MOBIKE which makes sure your connection -does not drop when changing networks from e.g. WIFI to LTE and back). -Authentication can be achieved with X.509 certificates. - -Setting up certificates: -^^^^^^^^^^^^^^^^^^^^^^^^ -First of all, we need to create a CA root certificate and server certificate -on the server side. - -.. code-block:: none - - vyos@vpn.vyos.net# run generate pki ca install ca_root - Enter private key type: [rsa, dsa, ec] (Default: rsa) - Enter private key bits: (Default: 2048) - Enter country code: (Default: GB) - Enter state: (Default: Some-State) - Enter locality: (Default: Some-City) - Enter organization name: (Default: VyOS) - Enter common name: (Default: vyos.io) - Enter how many days certificate will be valid: (Default: 1825) - Note: If you plan to use the generated key on this router, do not encrypt the private key. - Do you want to encrypt the private key with a passphrase? [y/N] N - 2 value(s) installed. Use "compare" to see the pending changes, and "commit" to apply. - [edit] - - - vyos@vpn.vyos.net# comp - [pki ca] - + ca_root { - + certificate "MIIDnTCCAoWgAwI…." - + private { - + key "MIIEvAIBADANBgkqhkiG9….” - - vyos@vpn.vyos.net# run generate pki certificate sign ca_root install server_cert - Do you already have a certificate request? [y/N] N - Enter private key type: [rsa, dsa, ec] (Default: rsa) - Enter private key bits: (Default: 2048) - Enter country code: (Default: GB) - Enter state: (Default: Some-State) - Enter locality: (Default: Some-City) - Enter organization name: (Default: VyOS) - Enter common name: (Default: vyos.io) vpn.vyos.net - Do you want to configure Subject Alternative Names? [y/N] N - Enter how many days certificate will be valid: (Default: 365) - Enter certificate type: (client, server) (Default: server) - Note: If you plan to use the generated key on this router, do not encrypt the private key. - Do you want to encrypt the private key with a passphrase? [y/N] N - 2 value(s) installed. Use "compare" to see the pending changes, and "commit" to apply. - - vyos@vpn.vyos.net# comp - [pki certificate] - + server_cert { - + certificate "MIIDuzCCAqOgAwIBAgIUaSrCPWx………" - + private { - + key "MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBK….." - + } - + } - - -Once the command is completed, it will add the certificate to the configuration -session, to the pki subtree. You can then review the proposed changes and -commit them. - -Setting up IPSec: -^^^^^^^^^^^^^^^^^ - -After the PKI certs are all set up we can start configuring our IPSec/IKE -proposals used for key-exchange end data encryption. The used encryption ciphers -and integrity algorithms vary from operating system to operating system. The -ones used in this example are validated to work on Windows 10. - -.. code-block:: none - - set vpn ipsec esp-group ESP-RW lifetime '3600' - set vpn ipsec esp-group ESP-RW pfs 'disable' - set vpn ipsec esp-group ESP-RW proposal 10 encryption 'aes128gcm128' - set vpn ipsec esp-group ESP-RW proposal 10 hash 'sha256' - - set vpn ipsec ike-group IKE-RW key-exchange 'ikev2' - set vpn ipsec ike-group IKE-RW lifetime '7200' - set vpn ipsec ike-group IKE-RW proposal 10 dh-group '14' - set vpn ipsec ike-group IKE-RW proposal 10 encryption 'aes128gcm128' - set vpn ipsec ike-group IKE-RW proposal 10 hash 'sha256' - -Every connection/remote-access pool we configure also needs a pool where we -can draw our client IP addresses from. We provide one IPv4 and IPv6 pool. -Authorized clients will receive an IPv4 address from the configured IPv4 prefix -and an IPv6 address from the IPv6 prefix. We can also send some DNS nameservers -down to our clients used on their connection. - -.. code-block:: none - - set vpn ipsec remote-access pool ra-rw-ipv4 name-server '192.0.2.1' - set vpn ipsec remote-access pool ra-rw-ipv4 prefix '192.0.2.128/25' - - set vpn ipsec remote-access pool ra-rw-ipv6 name-server '2001:db8:1000::1' - set vpn ipsec remote-access pool ra-rw-ipv6 prefix '2001:db8:2000::/64' - -Setting up tunnel: -^^^^^^^^^^^^^^^^^^ - -.. code-block:: none - - set vpn ipsec remote-access connection rw authentication local-id '192.0.2.1' - set vpn ipsec remote-access connection rw authentication server-mode 'x509' - set vpn ipsec remote-access connection rw authentication x509 ca-certificate 'ca_root' - set vpn ipsec remote-access connection rw authentication x509 certificate 'server_cert' - set vpn ipsec remote-access connection rw esp-group 'ESP-RW' - set vpn ipsec remote-access connection rw ike-group 'IKE-RW' - set vpn ipsec remote-access connection rw local-address '192.0.2.1' - set vpn ipsec remote-access connection rw pool 'ra-rw-ipv4' - set vpn ipsec remote-access connection rw pool 'ra-rw-ipv6' - -VyOS also supports two different modes of authentication, local and RADIUS. -To create a new local user named "vyos" with a password of "vyos" use the -following commands. - -.. code-block:: none - - set vpn ipsec remote-access connection rw authentication client-mode 'eap-mschapv2' - set vpn ipsec remote-access connection rw authentication local-users username vyos password 'vyos' - -Some client operating systems like to see the servers certificate. The following -option causes the server to voluntarily send its certificate, even if it wasn't -requested. - -.. code-block:: none - - set vpn ipsec remote-access connection rw authentication always-send-cert - -Client Configuration -^^^^^^^^^^^^^^^^^^^^ - -Most operating systems include native client support for IPsec IKEv2 VPN -connections, and others typically have an app or add-on package which adds the -capability. -This section covers IPsec IKEv2 client configuration for Windows 10. - -VyOS provides a command to generate a connection profile used by Windows clients -that will connect to the "rw" connection on our VyOS server. - -.. note:: Windows expects the server name to be also used in the server's - certificate common name, so it's best to use this DNS name for your VPN - connection. - -.. code-block:: none - - vyos@vpn.vyos.net:~$ generate ipsec profile windows-remote-access rw remote vpn.vyos.net - - - ==== <snip> ==== - Add-VpnConnection -Name "VyOS IKEv2 VPN" -ServerAddress "vpn.vyos.net" -TunnelType "Ikev2" - - Set-VpnConnectionIPsecConfiguration -ConnectionName "VyOS IKEv2 VPN" -AuthenticationTransformConstants GCMAES128 -CipherTransformConstants - GCMAES128 -EncryptionMethod GCMAES128 -IntegrityCheckMethod SHA256128 -PfsGroup None -DHGroup "Group14" -PassThru -Force - ==== </snip> ==== - -Add the commands from Snippet in the Windows side via PowerShell. -Also import the root CA cert to the Windows “Trusted Root Certification -Authorities” and establish the connection. - -Verification: -^^^^^^^^^^^^^ - -.. code-block:: none - - vyos@vpn.vyos.net:~$ show vpn ipsec remote-access summary - Connection ID Username Protocol State Uptime Tunnel IP Remote Host Remote ID IKE Proposal IPSec Proposal - --------------- ---------- ---------- ------- -------- ----------- ------------- ----------- ------------------------------------------ ------------------ - 5 vyos IKEv2 UP 37s 192.0.2.129 10.0.0.2 10.0.0.2 AES_GCM_16-128/PRF_HMAC_SHA2_256/MODP_2048 ESP:AES_GCM_16-128 diff --git a/docs/configuration/vpn/ipsec/rst-site2site_ipsec.rst b/docs/configuration/vpn/ipsec/rst-site2site_ipsec.rst deleted file mode 100644 index 9f8231e7..00000000 --- a/docs/configuration/vpn/ipsec/rst-site2site_ipsec.rst +++ /dev/null @@ -1,763 +0,0 @@ -.. _size2site_ipsec: - -###################### -IPsec Site-to-Site VPN -###################### - -**************************** -IPsec Site-to-Site VPN Types -**************************** - -VyOS supports two types of IPsec VPN: Policy-based IPsec VPN and Route-based -IPsec VPN. - -Policy-based VPN -================ - -Policy-based VPN is based on static configured policies. Each policy creates -individual IPSec SA. Traffic matches these SAs encrypted and directed to the -remote peer. - -Route-Based VPN -=============== - -Route-based VPN is based on secure traffic passing over Virtual Tunnel -Interfaces (VTIs). This type of IPsec VPNs allows using routing protocols. - -****************************** -Configuration Site-to-Site VPN -****************************** - -Requirements and Prerequisites for Site-to-Site VPN -=================================================== - -**Negotiated parameters that need to match** - -Phase 1 - * IKE version - * Authentication - * Encryption - * Hashing - * PRF - * Lifetime - - .. note:: Strongswan recommends to use the same lifetime value on both peers - -Phase 2 - * Encryption - * Hashing - * PFS - * Mode (tunnel or transport) - * Lifetime - - .. note:: Strongswan recommends to use the same lifetime value on both peers - - * Remote and Local networks in SA must be compatible on both peers - -Configuration Steps for Site-to-Site VPN -======================================== - -The next example shows the configuration one of the router participating in -IPsec VPN. - -Tunnel information: - * Phase 1: - * encryption: AES256 - * hash: SHA256 - * PRF: SHA256 - * DH: 14 - * lifetime: 28800 - * Phase 2: - * IPsec mode: tunnel - * encryption: AES256 - * hash: SHA256 - * PFS: inherited from DH Phase 1 - * lifetime: 3600 - * If Policy based VPN is used - * Remote network is 192.168.50.0/24. Local network is 192.168.10.0/24 - * If Route based VPN is used - * IP of the VTI interface is 10.0.0.1/30 - -.. note:: We do not recommend using policy-based vpn and route-based - vpn configurations to the same peer. - -**1. Configure ike-group (IKE Phase 1)** - -.. code-block:: none - - set vpn ipsec ike-group IKE close-action 'start' - set vpn ipsec ike-group IKE key-exchange 'ikev1' - set vpn ipsec ike-group IKE lifetime '28800' - set vpn ipsec ike-group IKE proposal 10 dh-group '14' - set vpn ipsec ike-group IKE proposal 10 encryption 'aes256' - set vpn ipsec ike-group IKE proposal 10 hash 'sha256' - set vpn ipsec ike-group IKE proposal 10 prf 'prfsha256' - -**2. Configure ESP-group (IKE Phase 2)** - -.. code-block:: none - - set vpn ipsec esp-group ESP lifetime '3600' - set vpn ipsec esp-group ESP mode 'tunnel' - set vpn ipsec esp-group ESP pfs 'enable' - set vpn ipsec esp-group ESP proposal 10 encryption 'aes256' - set vpn ipsec esp-group ESP proposal 10 hash 'sha256' - -**3. Specify interface facing to the protected destination.** - -.. code-block:: none - - set vpn ipsec interface eth0 - -**4. Configure PSK keys and authentication ids for this key if -authentication type is PSK** - -.. code-block:: none - - set vpn ipsec authentication psk PSK-KEY id '192.168.0.2' - set vpn ipsec authentication psk PSK-KEY id '192.168.5.2' - set vpn ipsec authentication psk PSK-KEY secret 'vyos' - -To set base64 secret encode plaintext password to base64 and set secret-type - -.. code-block:: none - - echo -n "vyos" | base64 - dnlvcw== - -.. code-block:: none - - set vpn ipsec authentication psk PSK-KEY secret 'dnlvcw==' - set vpn ipsec authentication psk PSK-KEY secret-type base64 - - -**5. Configure peer and apply IKE-group and esp-group to peer.** - -.. code-block:: none - - set vpn ipsec site-to-site peer PEER1 authentication local-id '192.168.0.2' - set vpn ipsec site-to-site peer PEER1 authentication mode 'pre-shared-secret' - set vpn ipsec site-to-site peer PEER1 authentication remote-id '192.168.5.2' - set vpn ipsec site-to-site peer PEER1 connection-type 'initiate' - set vpn ipsec site-to-site peer PEER1 default-esp-group 'ESP' - set vpn ipsec site-to-site peer PEER1 ike-group 'IKE' - set vpn ipsec site-to-site peer PEER1 local-address '192.168.0.2' - set vpn ipsec site-to-site peer PEER1 remote-address '192.168.5.2' - - Peer selects the key from step 4 according to local-id/remote-id pair. - -**6. Depends to vpn type (route-based vpn or policy-based vpn).** - - **6.1 For Policy-based VPN configure SAs using tunnel command - specifying remote and local networks.** - - .. code-block:: none - - set vpn ipsec site-to-site peer PEER1 tunnel 1 local prefix '192.168.10.0/24' - set vpn ipsec site-to-site peer PEER1 tunnel 1 remote prefix '192.168.50.0/24' - - **6.2 For Route-based VPN create VTI interface, set IP address to - this interface and bind this interface to the vpn peer.** - - .. code-block:: none - - set interfaces vti vti1 address 10.0.0.1/30 - set vpn ipsec site-to-site peer PEER1 vti bind vti1 - set vpn ipsec options disable-route-autoinstall - - Create routing between local networks via VTI interface using dynamic or - static routing. - - .. code-block:: none - - set protocol static route 192.168.50.0/24 next-hop 10.0.0.2 - -Initiator and Responder Connection Types -======================================== - -In Site-to-Site IPsec VPN it is recommended that one peer should be an -initiator and the other - the responder. The initiator actively establishes -the VPN tunnel. The responder passively waits for the remote peer to -establish the VPN tunnel. Depends on selected role it is recommended -select proper values for close-action and DPD action. - -The result of wrong value selection can be unstable work of the VPN. - * Duplicate CHILD SA creation. - * None of the VPN sides initiates the tunnel establishment. - -Below flow-chart could be a quick reference for the close-action -combination depending on how the peer is configured. - -.. figure:: /_static/images/IPSec_close_action_settings.* - -Similar combinations are applicable for the dead-peer-detection. - -Detailed Configuration Commands -=============================== - -PSK Key Authentication ----------------------- - -.. cfgcmd:: set vpn ipsec authentication psk <name> dhcp-interface - - ID for authentication generated from DHCP address - dynamically. - -.. cfgcmd:: set vpn ipsec authentication psk id <id> - - static ID's for authentication. In general local and remote - address ``<x.x.x.x>``, ``<h:h:h:h:h:h:h:h>`` or ``%any``. - -.. cfgcmd:: set vpn ipsec authentication psk secret <secret> - - A predefined shared secret used in configured mode - ``pre-shared-secret``. Base64-encoded secrets are allowed if - `secret-type base64` is configured. - -.. cfgcmd:: set vpn ipsec authentication psk secret-type <type> - - Specifies the secret type: - - * **plaintext** - Plain text type (default value). - * **base64** - Base64 type. - -Peer Configuration ------------------- - -Peer Authentication Commands -^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication mode <mode> - - Mode for authentication between VyOS and remote peer: - - * **pre-shared-secret** - Use predefined shared secret phrase. - * **rsa** - Use simple shared RSA key. - * **x509** - Use certificates infrastructure for authentication. - - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication local-id <id> - - ID for the local VyOS router. If defined, during the authentication - it will be send to remote peer. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication remote-id <id> - - ID for remote peer, instead of using peer name or - address. Useful in case if the remote peer is behind NAT - or if ``mode x509`` is used. - -.. stop_vyoslinter - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication rsa local-key <key> - - Name of PKI key-pair with local private key. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication rsa remote-key <key> - - Name of PKI key-pair with remote public key. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication rsa passphrase <passphrase> - - Local private key passphrase. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication use-x509-id <id> - - Use local ID from x509 certificate. Cannot be used when - ``id`` is defined. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication x509 ca-certificate <name> - - Name of CA certificate in PKI configuration. Using for authenticating - remote peer in x509 mode. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> authentication x509 certificate <name> - - Name of certificate in PKI configuration, which will be used - for authenticating local router on remote peer. - -.. start_vyoslinter - -.. cfgcmd:: set vpn ipsec authentication x509 passphrase <passphrase> - - Private key passphrase, if needed. - -Global Peer Configuration Commands -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> connection-type <type> - - Operational mode defines how to handle this connection process. - - * **initiate** - does initial connection to remote peer immediately - after configuring and after boot. In this mode the connection will - not be restarted in case of disconnection, therefore should be used - only together with DPD or another session tracking methods. - - * **trap** - does not try to initiate a connection to a remote - peer immediately. Instead, it installs a trap policy that will - trigger IKE negotiation and establish the IPsec session when - matching traffic is sent from the local side. This can be useful - when there is no direct connectivity to the peer due to firewall - or NAT in the middle of the local and remote side. - - .. warning:: The ``trap`` mode is not needed in most environments - and can lead to connection confusion or unintended tunnel uptime - behavior if used incorrectly. Using this mode requires careful - coordination with parameters such as ``close-action`` and DPD. - For most deployments, use ``initiate`` and ``none`` as described below. - - * **none** - loads the connection only, which then can be manually - initiated or used as a responder configuration. - - .. note:: For most site-to-site VPNs, configure one peer - with ``connection-type initiate`` (active side) and the other peer - with ``connection-type none`` (passive side) to - ensure stable and predictable tunnel behavior. - When using ``connection-type initiate``, you must also configure - DPD or another session tracking method (such as ``close-action``) - to automatically re-establish the tunnel after a disconnection. - Otherwise, the tunnel will not reconnect automatically if it goes down. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> default-esp-group <name> - - Name of ESP group to use by default for traffic encryption. - Might be overwritten by individual settings for tunnel or VTI - interface binding. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> description <description> - - Description for this peer. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> dhcp-interface <interface> - - Specify the interface which IP address, received from DHCP for IPSec - connection with this peer, will be used as ``local-address``. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> force-udp-encapsulation - - Force encapsulation of ESP into UDP datagrams. Useful in case if - between local and remote side is firewall or NAT, which not - allows passing plain ESP packets between them. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> ike-group <name> - - Name of IKE group to use for key exchanges. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> local-address <address> - - Local IP address for IPsec connection with this peer. - If defined ``any``, then an IP address which configured on interface with - default route will be used. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> remote-address <address> - - Remote IP address or hostname for IPsec connection. IPv4 or IPv6 - address is used when a peer has a public static IP address. Hostname - is a DNS name which could be used when a peer has a public IP - address and DNS name, but an IP address could be changed from time - to time. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> replay-window <size> - - IPsec replay window to configure for CHILD_SAs - (default: 32), a value of 0 disables IPsec replay protection. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> virtual-address <address> - - Defines a virtual IP address which is requested by the initiator and - one or several IPv4 and/or IPv6 addresses are assigned from multiple - pools by the responder. The wildcard addresses 0.0.0.0 and :: - request an arbitrary address, specific addresses may be defined. - -CHILD SAs Configuration Commands -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -Policy-Based CHILD SAs Configuration Commands -""""""""""""""""""""""""""""""""""""""""""""" - -Every configured tunnel under peer configuration is a new CHILD SA. - -.. stop_vyoslinter - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> disable - - Disable this tunnel. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> esp-group <name> - - Specify ESP group for this CHILD SA. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> priority <number> - - Priority for policy-based IPsec VPN tunnels (lowest value more - preferable). - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> protocol <name> - - Define the protocol for match traffic, which should be encrypted and - send to this peer. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> local prefix <network> - - IP network at the local side. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> local port <number> - - Local port number. Have effect only when used together with - ``prefix``. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> remote prefix <network> - - IP network at the remote side. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> tunnel <number> remote port <number> - - Remote port number. Have effect only when used together with - ``prefix``. - -.. start_vyoslinter - -Route-Based CHILD SAs Configuration Commands -""""""""""""""""""""""""""""""""""""""""""""" - -To configure route-based VPN it is enough to create vti interface and -bind it to the peer. Any traffic, which will be send to VTI interface -will be encrypted and send to this peer. Using VTI makes IPsec -configuration much flexible and easier in complex situation, and -allows to dynamically add/delete remote networks, reachable via a -peer, as in this mode router don't need to create additional SA/policy -for each remote network. - -.. warning:: When using site-to-site IPsec with VTI interfaces, - be sure to disable route autoinstall. - -.. code-block:: none - - set vpn ipsec options disable-route-autoinstall - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> vti bind <interface> - - VTI interface to bind to this peer. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> vti esp-group <name> - - ESP group for encrypt traffic, passed this VTI interface. - -Traffic-selectors parameters for traffic that should pass via vti -interface. - -.. stop_vyoslinter - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> vti traffic-selector local prefix <network> - - Local prefix for interesting traffic. - -.. cfgcmd:: set vpn ipsec site-to-site peer <name> vti traffic-selector remote prefix <network> - - Remote prefix for interesting traffic. - -.. start_vyoslinter - -IPsec Op-mode Commands -====================== - -.. opcmd:: show vpn ike sa - - Shows active IKE SAs information. - -.. opcmd:: show vpn ike secrets - - Shows configured authentication keys. - -.. opcmd:: show vpn ike status - - Shows Strongswan daemon status. - -.. opcmd:: show vpn ipsec connections - - Shows summary status of all configured IKE and IPsec SAs. - -.. opcmd:: show vpn ipsec sa [detail] - - Shows active IPsec SAs information. - -.. opcmd:: show vpn ipsec status - - Shows status of IPsec process. - -.. opcmd:: show vpn ipsec policy - - Shows the in-kernel crypto policies. - -.. opcmd:: show vpn ipsec state - - Shows the in-kernel crypto state. - -.. opcmd:: show log ipsec - - Shows IPsec logs. - -.. opcmd:: reset vpn ipsec site-to-site all - - Clear all ipsec connection and reinitiate them if VyOS is configured - as initiator. - -.. opcmd:: reset vpn ipsec site-to-site peer <name> - - Clear all peer IKE SAs with IPsec SAs and reinitiate them if VyOS is - configured as initiator. - -.. opcmd:: reset vpn ipsec site-to-site peer <name> tunnel <number> - - Clear scpecific IPsec SA and reinitiate it if VyOS is configured as - initiator. - -.. opcmd:: reset vpn ipsec site-to-site peer <name> vti <number> - - Clear IPsec SA which is map to vti interface of this peer and - reinitiate it if VyOS is configured as initiator. - -.. opcmd:: restart ipsec - - Restart Strongswan daemon. - -********* -Examples: -********* - -Policy-Based VPN Example -======================== - -**PEER1:** - -* WAN interface on `eth0` -* `eth0` interface IP: `10.0.1.2/30` -* `dum0` interface IP: `192.168.0.1/24` (for testing purposes) -* Initiator - -**PEER2:** - -* WAN interface on `eth0` -* `eth0` interface IP: `10.0.2.2/30` -* `dum0` interface IP: `192.168.1.0/24` (for testing purposes) -* Responder - -.. code-block:: none - - # PEER1 - set interfaces dummy dum0 address '192.168.0.1/32' - set interfaces ethernet eth0 address '10.0.1.2/30' - set protocols static route 0.0.0.0/0 next-hop 10.0.1.1 - set vpn ipsec authentication psk AUTH-PSK id '10.0.1.2' - set vpn ipsec authentication psk AUTH-PSK id '10.0.2.2' - set vpn ipsec authentication psk AUTH-PSK secret 'test' - set vpn ipsec esp-group ESP-GRPOUP lifetime '3600' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 encryption 'aes256' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 hash 'sha1' - set vpn ipsec ike-group IKE-GROUP close-action 'start' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection action 'restart' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection interval '30' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection timeout '120' - set vpn ipsec ike-group IKE-GROUP key-exchange 'ikev1' - set vpn ipsec ike-group IKE-GROUP lifetime '28800' - set vpn ipsec ike-group IKE-GROUP proposal 10 dh-group '14' - set vpn ipsec ike-group IKE-GROUP proposal 10 encryption 'aes256' - set vpn ipsec ike-group IKE-GROUP proposal 10 hash 'sha1' - set vpn ipsec interface 'eth0' - set vpn ipsec site-to-site peer PEER2 authentication local-id '10.0.1.2' - set vpn ipsec site-to-site peer PEER2 authentication mode 'pre-shared-secret' - set vpn ipsec site-to-site peer PEER2 authentication remote-id '10.0.2.2' - set vpn ipsec site-to-site peer PEER2 connection-type 'initiate' - set vpn ipsec site-to-site peer PEER2 default-esp-group 'ESP-GRPOUP' - set vpn ipsec site-to-site peer PEER2 ike-group 'IKE-GROUP' - set vpn ipsec site-to-site peer PEER2 local-address '10.0.1.2' - set vpn ipsec site-to-site peer PEER2 remote-address '10.0.2.2' - set vpn ipsec site-to-site peer PEER2 tunnel 0 local prefix '192.168.0.0/24' - set vpn ipsec site-to-site peer PEER2 tunnel 0 remote prefix '192.168.1.0/24' - - - # PEER2 - set interfaces dummy dum0 address '192.168.1.1/32' - set interfaces ethernet eth0 address '10.0.2.2/30' - set protocols static route 0.0.0.0/0 next-hop 10.0.2.1 - set vpn ipsec authentication psk AUTH-PSK id '10.0.1.2' - set vpn ipsec authentication psk AUTH-PSK id '10.0.2.2' - set vpn ipsec authentication psk AUTH-PSK secret 'test' - set vpn ipsec esp-group ESP-GRPOUP lifetime '3600' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 encryption 'aes256' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 hash 'sha1' - set vpn ipsec ike-group IKE-GROUP close-action 'none' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection action 'clear' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection interval '30' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection timeout '120' - set vpn ipsec ike-group IKE-GROUP key-exchange 'ikev1' - set vpn ipsec ike-group IKE-GROUP lifetime '28800' - set vpn ipsec ike-group IKE-GROUP proposal 10 dh-group '14' - set vpn ipsec ike-group IKE-GROUP proposal 10 encryption 'aes256' - set vpn ipsec ike-group IKE-GROUP proposal 10 hash 'sha1' - set vpn ipsec interface 'eth0' - set vpn ipsec site-to-site peer PEER1 authentication local-id '10.0.2.2' - set vpn ipsec site-to-site peer PEER1 authentication mode 'pre-shared-secret' - set vpn ipsec site-to-site peer PEER1 authentication remote-id '10.0.1.2' - set vpn ipsec site-to-site peer PEER1 connection-type 'none' - set vpn ipsec site-to-site peer PEER1 default-esp-group 'ESP-GRPOUP' - set vpn ipsec site-to-site peer PEER1 ike-group 'IKE-GROUP' - set vpn ipsec site-to-site peer PEER1 local-address '10.0.2.2' - set vpn ipsec site-to-site peer PEER1 remote-address '10.0.1.2' - set vpn ipsec site-to-site peer PEER1 tunnel 0 local prefix '192.168.1.0/24' - set vpn ipsec site-to-site peer PEER1 tunnel 0 remote prefix '192.168.0.0/24' - - -Show status of policy-based IPsec VPN setup: - -.. code-block:: none - - vyos@PEER2:~$ show vpn ike sa - Peer ID / IP Local ID / IP - ------------ ------------- - 10.0.1.2 10.0.1.2 10.0.2.2 10.0.2.2 - - State IKEVer Encrypt Hash D-H Group NAT-T A-Time L-Time - ----- ------ ------- ---- --------- ----- ------ ------ - up IKEv1 AES_CBC_256 HMAC_SHA1_96 MODP_2048 no 1254 25633 - - - vyos@srv-gw0:~$ show vpn ipsec sa - Connection State Uptime Bytes In/Out Packets In/Out Remote address Remote ID Proposal - -------------- ------- -------- -------------- ---------------- ---------------- ----------- ---------------------------------- - PEER1-tunnel-0 up 20m42s 0B/0B 0/0 10.0.1.2 10.0.1.2 AES_CBC_256/HMAC_SHA1_96/MODP_2048 - - vyos@PEER2:~$ show vpn ipsec connections - Connection State Type Remote address Local TS Remote TS Local id Remote id Proposal - -------------- ------- ------ ---------------- -------------- -------------- ---------- ----------- ---------------------------------- - PEER1 up IKEv1 10.0.1.2 - - 10.0.2.2 10.0.1.2 AES_CBC/256/HMAC_SHA1_96/MODP_2048 - PEER1-tunnel-0 up IPsec 10.0.1.2 192.168.1.0/24 192.168.0.0/24 10.0.2.2 10.0.1.2 AES_CBC/256/HMAC_SHA1_96/MODP_2048 - -If there is SNAT rules on eth0, need to add exclude rule - -.. code-block:: none - - # PEER1 side - set nat source rule 10 destination address '192.168.1.0/24' - set nat source rule 10 'exclude' - set nat source rule 10 outbound-interface name 'eth0' - set nat source rule 10 source address '192.168.0.0/24' - - # PEER2 side - set nat source rule 10 destination address '192.168.0.0/24' - set nat source rule 10 'exclude' - set nat source rule 10 outbound-interface name 'eth0' - set nat source rule 10 source address '192.168.1.0/24' - - -Route-Based VPN Example -======================= - -**PEER1:** - -* WAN interface on `eth0` -* `eth0` interface IP: `10.0.1.2/30` -* 'vti0' interface IP: `10.100.100.1/30` -* `dum0` interface IP: `192.168.0.1/24` (for testing purposes) -* Role: Initiator - -**PEER2:** - -* WAN interface on `eth0` -* `eth0` interface IP: `10.0.2.2/30` -* 'vti0' interface IP: `10.100.100.2/30` -* `dum0` interface IP: `192.168.1.0/24` (for testing purposes) -* Role: Responder - -.. code-block:: none - - # PEER1 - set interfaces dummy dum0 address '192.168.0.1/32' - set interfaces ethernet eth0 address '10.0.1.2/30' - set interfaces vti vti0 address '10.100.100.1/30' - set protocols static route 0.0.0.0/0 next-hop 10.0.1.1 - set protocols static route 192.168.1.0/24 next-hop 10.100.100.2 - set vpn ipsec authentication psk AUTH-PSK id '10.0.1.2' - set vpn ipsec authentication psk AUTH-PSK id '10.0.2.2' - set vpn ipsec authentication psk AUTH-PSK secret 'test' - set vpn ipsec esp-group ESP-GRPOUP lifetime '3600' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 encryption 'aes256' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 hash 'sha1' - set vpn ipsec ike-group IKE-GROUP close-action 'start' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection action 'restart' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection interval '30' - set vpn ipsec ike-group IKE-GROUP key-exchange 'ikev2' - set vpn ipsec ike-group IKE-GROUP lifetime '28800' - set vpn ipsec ike-group IKE-GROUP proposal 10 dh-group '14' - set vpn ipsec ike-group IKE-GROUP proposal 10 encryption 'aes256' - set vpn ipsec ike-group IKE-GROUP proposal 10 hash 'sha1' - set vpn ipsec interface 'eth0' - set vpn ipsec options disable-route-autoinstall - set vpn ipsec site-to-site peer PEER2 authentication local-id '10.0.1.2' - set vpn ipsec site-to-site peer PEER2 authentication mode 'pre-shared-secret' - set vpn ipsec site-to-site peer PEER2 authentication remote-id '10.0.2.2' - set vpn ipsec site-to-site peer PEER2 connection-type 'initiate' - set vpn ipsec site-to-site peer PEER2 default-esp-group 'ESP-GRPOUP' - set vpn ipsec site-to-site peer PEER2 ike-group 'IKE-GROUP' - set vpn ipsec site-to-site peer PEER2 local-address '10.0.1.2' - set vpn ipsec site-to-site peer PEER2 remote-address '10.0.2.2' - set vpn ipsec site-to-site peer PEER2 vti bind 'vti0' - - - # PEER2 - set interfaces dummy dum0 address '192.168.1.1/32' - set interfaces ethernet eth0 address '10.0.2.2/30' - set interfaces vti vti0 address '10.100.100.2/30' - set protocols static route 0.0.0.0/0 next-hop 10.0.2.1 - set protocols static route 192.168.0.0/24 next-hop 10.100.100.1 - set vpn ipsec authentication psk AUTH-PSK id '10.0.1.2' - set vpn ipsec authentication psk AUTH-PSK id '10.0.2.2' - set vpn ipsec authentication psk AUTH-PSK secret 'test' - set vpn ipsec esp-group ESP-GRPOUP lifetime '3600' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 encryption 'aes256' - set vpn ipsec esp-group ESP-GRPOUP proposal 10 hash 'sha1' - set vpn ipsec ike-group IKE-GROUP close-action 'none' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection action 'clear' - set vpn ipsec ike-group IKE-GROUP dead-peer-detection interval '30' - set vpn ipsec ike-group IKE-GROUP key-exchange 'ikev2' - set vpn ipsec ike-group IKE-GROUP lifetime '28800' - set vpn ipsec ike-group IKE-GROUP proposal 10 dh-group '14' - set vpn ipsec ike-group IKE-GROUP proposal 10 encryption 'aes256' - set vpn ipsec ike-group IKE-GROUP proposal 10 hash 'sha1' - set vpn ipsec interface 'eth0' - set vpn ipsec options disable-route-autoinstall - set vpn ipsec site-to-site peer PEER1 authentication local-id '10.0.2.2' - set vpn ipsec site-to-site peer PEER1 authentication mode 'pre-shared-secret' - set vpn ipsec site-to-site peer PEER1 authentication remote-id '10.0.1.2' - set vpn ipsec site-to-site peer PEER1 connection-type 'none' - set vpn ipsec site-to-site peer PEER1 default-esp-group 'ESP-GRPOUP' - set vpn ipsec site-to-site peer PEER1 ike-group 'IKE-GROUP' - set vpn ipsec site-to-site peer PEER1 local-address '10.0.2.2' - set vpn ipsec site-to-site peer PEER1 remote-address '10.0.1.2' - set vpn ipsec site-to-site peer PEER1 vti bind 'vti0' - -Show status of route-based IPsec VPN setup: - -.. code-block:: none - - vyos@PEER2:~$ show vpn ike sa - Peer ID / IP Local ID / IP - ------------ ------------- - 10.0.1.2 10.0.1.2 10.0.2.2 10.0.2.2 - - State IKEVer Encrypt Hash D-H Group NAT-T A-Time L-Time - ----- ------ ------- ---- --------- ----- ------ ------ - up IKEv2 AES_CBC_256 HMAC_SHA1_96 MODP_2048 no 404 27650 - - vyos@PEER2:~$ show vpn ipsec sa - Connection State Uptime Bytes In/Out Packets In/Out Remote address Remote ID Proposal - ------------ ------- -------- -------------- ---------------- ---------------- ----------- ---------------------------------- - PEER1-vti up 3m28s 0B/0B 0/0 10.0.1.2 10.0.1.2 AES_CBC_256/HMAC_SHA1_96/MODP_2048 - - vyos@PEER2:~$ show vpn ipsec connections - Connection State Type Remote address Local TS Remote TS Local id Remote id Proposal - ------------ ------- ------ ---------------- ---------- ----------- ---------- ----------- ---------------------------------- - PEER1 up IKEv2 10.0.1.2 - - 10.0.2.2 10.0.1.2 AES_CBC/256/HMAC_SHA1_96/MODP_2048 - PEER1-vti up IPsec 10.0.1.2 0.0.0.0/0 0.0.0.0/0 10.0.2.2 10.0.1.2 AES_CBC/256/HMAC_SHA1_96/MODP_2048 - ::/0 ::/0 diff --git a/docs/configuration/vpn/ipsec/rst-troubleshooting_ipsec.rst b/docs/configuration/vpn/ipsec/rst-troubleshooting_ipsec.rst deleted file mode 100644 index f0f2e208..00000000 --- a/docs/configuration/vpn/ipsec/rst-troubleshooting_ipsec.rst +++ /dev/null @@ -1,330 +0,0 @@ -.. _troubleshooting_ipsec: - -###################################### -Troubleshooting Site-to-Site VPN IPsec -###################################### - -.. TODO:: Convert raw command blocks in this file to cfgcmd/opcmd - directives for command coverage tracking. - -************ -Introduction -************ - -This document describes the methodology to monitor and troubleshoot -Site-to-Site VPN IPsec. - -Steps for troubleshooting problems with Site-to-Site VPN IPsec: - 1. Ping the remote site through the tunnel using the source and - destination IPs included in the policy. - 2. Check connectivity between the routers using the ping command - (if ICMP traffic is allowed). - 3. Check the IKE SAs' statuses. - 4. Check the IPsec SAs' statuses. - 5. Check logs to view debug messages. - -********************** -Checking IKE SA Status -********************** - -The next command shows IKE SAs' statuses. - -.. stop_vyoslinter - -.. code-block:: none - - vyos@vyos:~$ show vpn ike sa - - Peer ID / IP Local ID / IP - ------------ ------------- - 192.168.1.2 192.168.1.2 192.168.0.1 192.168.0.1 - - State IKEVer Encrypt Hash D-H Group NAT-T A-Time L-Time - ----- ------ ------- ---- --------- ----- ------ ------ - up IKEv2 AES_CBC_128 HMAC_SHA1_96 MODP_2048 no 162 27023 - -This command shows the next information: - - IKE SA status. - - Selected IKE version. - - Selected Encryption, Hash and Diffie-Hellman Group. - - NAT-T. - - ID and IP of both peers. - - A-Time: established time, L-Time: time for next rekeying. - -************************** -IPsec SA (CHILD SA) Status -************************** - -The next commands show IPsec SAs' statuses. - -.. code-block:: none - - vyos@vyos:~$ show vpn ipsec sa - Connection State Uptime Bytes In/Out Packets In/Out Remote address Remote ID Proposal - ------------- ------- -------- -------------- ---------------- ---------------- ----------- ---------------------------------- - PEER-tunnel-1 up 16m30s 168B/168B 2/2 192.168.1.2 192.168.1.2 AES_CBC_128/HMAC_SHA1_96/MODP_2048 - -.. code-block:: none - - vyos@vyos:~$ show vpn ipsec sa detail - PEER: #1, ESTABLISHED, IKEv2, 101275ac719d5a1b_i* 68ea4ec3bed3bf0c_r - local '192.168.0.1' @ 192.168.0.1[4500] - remote '192.168.1.2' @ 192.168.1.2[4500] - AES_CBC-128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - established 4054s ago, rekeying in 23131s - PEER-tunnel-1: #2, reqid 1, INSTALLED, TUNNEL, ESP:AES_CBC-128/HMAC_SHA1_96/MODP_2048 - installed 1065s ago, rekeying in 1998s, expires in 2535s - in c5821882, 168 bytes, 2 packets, 81s ago - out c433406a, 168 bytes, 2 packets, 81s ago - local 10.0.0.0/24 - remote 10.0.1.0/24 - -These commands show the next information: - - IPsec SA status. - - Uptime and time for the next rekeing. - - Amount of transferred data. - - Remote and local ID and IP. - - Selected Encryption, Hash and Diffie-Hellman Group. - - Mode (tunnel or transport). - - Remote and local prefixes which are use for policy. - -There is a possibility to view the summarized information of SAs' status - -.. code-block:: none - - vyos@vyos:~$ show vpn ipsec connections - Connection State Type Remote address Local TS Remote TS Local id Remote id Proposal - ------------- ------- ------ ---------------- ----------- ----------- ----------- ----------- ---------------------------------- - PEER up IKEv2 192.168.1.2 - - 192.168.0.1 192.168.1.2 AES_CBC/128/HMAC_SHA1_96/MODP_2048 - PEER-tunnel-1 up IPsec 192.168.1.2 10.0.0.0/24 10.0.1.0/24 192.168.0.1 192.168.1.2 AES_CBC/128/HMAC_SHA1_96/MODP_2048 - -************************** -Viewing Logs for Debugging -************************** - -If IKE SAs or IPsec SAs are down, need to debug IPsec connectivity -using logs ``show log ipsec`` - -The next example of the successful IPsec connection initialization. - -.. code-block:: none - - vyos@vyos:~$ show log ipsec - Jun 20 14:29:47 charon[2428]: 02[NET] <PEER|1> received packet: from 192.168.1.2[500] to 192.168.0.1[500] (472 bytes) - Jun 20 14:29:47 charon[2428]: 02[ENC] <PEER|1> parsed IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(CHDLESS_SUP) N(MULT_AUTH) ] - Jun 20 14:29:47 charon-systemd[2428]: received packet: from 192.168.1.2[500] to 192.168.0.1[500] (472 bytes) - Jun 20 14:29:47 charon[2428]: 02[CFG] <PEER|1> selected proposal: IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 20 14:29:47 charon-systemd[2428]: parsed IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(CHDLESS_SUP) N(MULT_AUTH) ] - Jun 20 14:29:47 charon-systemd[2428]: selected proposal: IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 20 14:29:47 charon[2428]: 02[IKE] <PEER|1> authentication of '192.168.0.1' (myself) with pre-shared key - Jun 20 14:29:47 charon-systemd[2428]: authentication of '192.168.0.1' (myself) with pre-shared key - Jun 20 14:29:47 charon[2428]: 02[IKE] <PEER|1> establishing CHILD_SA PEER-tunnel-1{1} - Jun 20 14:29:47 charon-systemd[2428]: establishing CHILD_SA PEER-tunnel-1{1} - Jun 20 14:29:47 charon[2428]: 02[ENC] <PEER|1> generating IKE_AUTH request 1 [ IDi N(INIT_CONTACT) IDr AUTH SA TSi TSr N(MOBIKE_SUP) N(NO_ADD_ADDR) N(MULT_AUTH) N(EAP_ONLY) N(MSG_ID_SYN_SUP) ] - Jun 20 14:29:47 charon-systemd[2428]: generating IKE_AUTH request 1 [ IDi N(INIT_CONTACT) IDr AUTH SA TSi TSr N(MOBIKE_SUP) N(NO_ADD_ADDR) N(MULT_AUTH) N(EAP_ONLY) N(MSG_ID_SYN_SUP) ] - Jun 20 14:29:47 charon[2428]: 02[NET] <PEER|1> sending packet: from 192.168.0.1[4500] to 192.168.1.2[4500] (268 bytes) - Jun 20 14:29:47 charon-systemd[2428]: sending packet: from 192.168.0.1[4500] to 192.168.1.2[4500] (268 bytes) - Jun 20 14:29:47 charon[2428]: 13[NET] <PEER|1> received packet: from 192.168.1.2[4500] to 192.168.0.1[4500] (220 bytes) - Jun 20 14:29:47 charon[2428]: 13[ENC] <PEER|1> parsed IKE_AUTH response 1 [ IDr AUTH SA TSi TSr N(MOBIKE_SUP) N(NO_ADD_ADDR) ] - Jun 20 14:29:47 charon-systemd[2428]: received packet: from 192.168.1.2[4500] to 192.168.0.1[4500] (220 bytes) - Jun 20 14:29:47 charon[2428]: 13[IKE] <PEER|1> authentication of '192.168.1.2' with pre-shared key successful - Jun 20 14:29:47 charon-systemd[2428]: parsed IKE_AUTH response 1 [ IDr AUTH SA TSi TSr N(MOBIKE_SUP) N(NO_ADD_ADDR) ] - Jun 20 14:29:47 charon[2428]: 13[IKE] <PEER|1> peer supports MOBIKE - Jun 20 14:29:47 charon-systemd[2428]: authentication of '192.168.1.2' with pre-shared key successful - Jun 20 14:29:47 charon[2428]: 13[IKE] <PEER|1> IKE_SA PEER[1] established between 192.168.0.1[192.168.0.1]...192.168.1.2[192.168.1.2] - Jun 20 14:29:47 charon-systemd[2428]: peer supports MOBIKE - Jun 20 14:29:47 charon[2428]: 13[IKE] <PEER|1> scheduling rekeying in 27703s - Jun 20 14:29:47 charon-systemd[2428]: IKE_SA PEER[1] established between 192.168.0.1[192.168.0.1]...192.168.1.2[192.168.1.2] - Jun 20 14:29:47 charon[2428]: 13[IKE] <PEER|1> maximum IKE_SA lifetime 30583s - Jun 20 14:29:47 charon-systemd[2428]: scheduling rekeying in 27703s - Jun 20 14:29:47 charon[2428]: 13[CFG] <PEER|1> selected proposal: ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ - Jun 20 14:29:47 charon-systemd[2428]: maximum IKE_SA lifetime 30583s - Jun 20 14:29:47 charon-systemd[2428]: selected proposal: ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ - Jun 20 14:29:47 charon[2428]: 13[IKE] <PEER|1> CHILD_SA PEER-tunnel-1{1} established with SPIs cb94fb3f_i ca99c8a9_o and TS 10.0.0.0/24 === 10.0.1.0/24 - Jun 20 14:29:47 charon-systemd[2428]: CHILD_SA PEER-tunnel-1{1} established with SPIs cb94fb3f_i ca99c8a9_o and TS 10.0.0.0/24 === 10.0.1.0/24 - -************************ -Troubleshooting Examples -************************ - -IKE PROPOSAL are Different -========================== - -In this situation, IKE SAs can be down or not active. - -.. code-block:: none - - vyos@vyos:~$ show vpn ike sa - -The problem is in IKE phase (Phase 1). The next step is checking debug logs. - -Responder Side: - -.. code-block:: none - - Jun 23 07:36:33 charon[2440]: 01[CFG] <1> received proposals: IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 23 07:36:33 charon-systemd[2440]: received proposals: IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 23 07:36:33 charon[2440]: 01[CFG] <1> configured proposals: IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 23 07:36:33 charon-systemd[2440]: configured proposals: IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 23 07:36:33 charon[2440]: 01[IKE] <1> received proposals unacceptable - Jun 23 07:36:33 charon-systemd[2440]: received proposals unacceptable - Jun 23 07:36:33 charon[2440]: 01[ENC] <1> generating IKE_SA_INIT response 0 [ N(NO_PROP) ] - -Initiator side: - -.. code-block:: none - - Jun 23 07:36:32 charon-systemd[2444]: parsed IKE_SA_INIT response 0 [ N(NO_PROP) ] - Jun 23 07:36:32 charon[2444]: 14[IKE] <PEER|1> received NO_PROPOSAL_CHOSEN notify error - Jun 23 07:36:32 charon-systemd[2444]: received NO_PROPOSAL_CHOSEN notify error - -The notification **NO_PROPOSAL_CHOSEN** means that the proposal mismatch. -On the Responder side there is concrete information where is mismatch. -Encryption **AES_CBC_128** is configured in IKE policy on the responder -but **AES_CBC_256** is configured on the initiator side. - -PSK Secret Mismatch -=================== - -In this situation, IKE SAs can be down or not active. - -.. code-block:: none - - vyos@vyos:~$ show vpn ike sa - -The problem is in IKE phase (Phase 1). The next step is checking debug logs. - -Responder: - -.. code-block:: none - - Jun 23 08:07:26 charon-systemd[2440]: tried 1 shared key for '192.168.1.2' - '192.168.0.1', but MAC mismatched - Jun 23 08:07:26 charon[2440]: 13[ENC] <PEER|3> generating IKE_AUTH response 1 [ N(AUTH_FAILED) ] - -Initiator side: - -.. code-block:: none - - Jun 23 08:07:24 charon[2436]: 12[ENC] <PEER|1> parsed IKE_AUTH response 1 [ N(AUTH_FAILED) ] - Jun 23 08:07:24 charon-systemd[2436]: parsed IKE_AUTH response 1 [ N(AUTH_FAILED) ] - Jun 23 08:07:24 charon[2436]: 12[IKE] <PEER|1> received AUTHENTICATION_FAILED notify error - Jun 23 08:07:24 charon-systemd[2436]: received AUTHENTICATION_FAILED notify error - -The notification **AUTHENTICATION_FAILED** means that the authentication -is failed. There is a reason to check PSK on both side. - -ESP Proposal Mismatch -===================== - -The output of **show** commands shows us that IKE SA is established but -IPSec SA is not. - -.. code-block:: none - - vyos@vyos:~$ show vpn ike sa - Peer ID / IP Local ID / IP - ------------ ------------- - 192.168.1.2 192.168.1.2 192.168.0.1 192.168.0.1 - - State IKEVer Encrypt Hash D-H Group NAT-T A-Time L-Time - ----- ------ ------- ---- --------- ----- ------ ------ - up IKEv2 AES_CBC_128 HMAC_SHA1_96 MODP_2048 no 158 26817 - -.. code-block:: none - - vyos@vyos:~$ show vpn ipsec sa - Connection State Uptime Bytes In/Out Packets In/Out Remote address Remote ID Proposal - ------------ ------- -------- -------------- ---------------- ---------------- ----------- ---------- - -The next step is checking debug logs. - -Initiator side: - -.. code-block:: none - - Jun 23 08:16:10 charon[3789]: 13[NET] <PEER|1> received packet: from 192.168.1.2[500] to 192.168.0.1[500] (472 bytes) - Jun 23 08:16:10 charon[3789]: 13[ENC] <PEER|1> parsed IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(CHDLESS_SUP) N(MULT_AUTH) ] - Jun 23 08:16:10 charon-systemd[3789]: received packet: from 192.168.1.2[500] to 192.168.0.1[500] (472 bytes) - Jun 23 08:16:10 charon[3789]: 13[CFG] <PEER|1> selected proposal: IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 23 08:16:10 charon-systemd[3789]: parsed IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(CHDLESS_SUP) N(MULT_AUTH) ] - Jun 23 08:16:10 charon-systemd[3789]: selected proposal: IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048 - Jun 23 08:16:10 charon[3789]: 13[IKE] <PEER|1> authentication of '192.168.0.1' (myself) with pre-shared key - Jun 23 08:16:10 charon-systemd[3789]: authentication of '192.168.0.1' (myself) with pre-shared key - Jun 23 08:16:10 charon[3789]: 13[IKE] <PEER|1> establishing CHILD_SA PEER-tunnel-1{1} - Jun 23 08:16:10 charon-systemd[3789]: establishing CHILD_SA PEER-tunnel-1{1} - Jun 23 08:16:10 charon[3789]: 13[ENC] <PEER|1> generating IKE_AUTH request 1 [ IDi N(INIT_CONTACT) IDr AUTH SA TSi TSr N(MOBIKE_SUP) N(NO_ADD_ADDR) N(MULT_AUTH) N(EAP_ONLY) N(MSG_ID_SYN_SUP) ] - Jun 23 08:16:10 charon-systemd[3789]: generating IKE_AUTH request 1 [ IDi N(INIT_CONTACT) IDr AUTH SA TSi TSr N(MOBIKE_SUP) N(NO_ADD_ADDR) N(MULT_AUTH) N(EAP_ONLY) N(MSG_ID_SYN_SUP) ] - Jun 23 08:16:10 charon[3789]: 13[NET] <PEER|1> sending packet: from 192.168.0.1[4500] to 192.168.1.2[4500] (268 bytes) - Jun 23 08:16:10 charon-systemd[3789]: sending packet: from 192.168.0.1[4500] to 192.168.1.2[4500] (268 bytes) - Jun 23 08:16:10 charon[3789]: 09[NET] <PEER|1> received packet: from 192.168.1.2[4500] to 192.168.0.1[4500] (140 bytes) - Jun 23 08:16:10 charon-systemd[3789]: received packet: from 192.168.1.2[4500] to 192.168.0.1[4500] (140 bytes) - Jun 23 08:16:10 charon[3789]: 09[ENC] <PEER|1> parsed IKE_AUTH response 1 [ IDr AUTH N(MOBIKE_SUP) N(NO_ADD_ADDR) N(NO_PROP) ] - Jun 23 08:16:10 charon-systemd[3789]: parsed IKE_AUTH response 1 [ IDr AUTH N(MOBIKE_SUP) N(NO_ADD_ADDR) N(NO_PROP) ] - Jun 23 08:16:10 charon[3789]: 09[IKE] <PEER|1> authentication of '192.168.1.2' with pre-shared key successful - Jun 23 08:16:10 charon-systemd[3789]: authentication of '192.168.1.2' with pre-shared key successful - Jun 23 08:16:10 charon[3789]: 09[IKE] <PEER|1> peer supports MOBIKE - Jun 23 08:16:10 charon-systemd[3789]: peer supports MOBIKE - Jun 23 08:16:10 charon[3789]: 09[IKE] <PEER|1> IKE_SA PEER[1] established between 192.168.0.1[192.168.0.1]...192.168.1.2[192.168.1.2] - Jun 23 08:16:10 charon-systemd[3789]: IKE_SA PEER[1] established between 192.168.0.1[192.168.0.1]...192.168.1.2[192.168.1.2] - Jun 23 08:16:10 charon[3789]: 09[IKE] <PEER|1> scheduling rekeying in 26975s - Jun 23 08:16:10 charon-systemd[3789]: scheduling rekeying in 26975s - Jun 23 08:16:10 charon[3789]: 09[IKE] <PEER|1> maximum IKE_SA lifetime 29855s - Jun 23 08:16:10 charon-systemd[3789]: maximum IKE_SA lifetime 29855s - Jun 23 08:16:10 charon[3789]: 09[IKE] <PEER|1> received NO_PROPOSAL_CHOSEN notify, no CHILD_SA built - Jun 23 08:16:10 charon-systemd[3789]: received NO_PROPOSAL_CHOSEN notify, no CHILD_SA built - Jun 23 08:16:10 charon[3789]: 09[IKE] <PEER|1> failed to establish CHILD_SA, keeping IKE_SA - Jun 23 08:16:10 charon-systemd[3789]: failed to establish CHILD_SA, keeping IKE_SA - -There are messages: **NO_PROPOSAL_CHOSEN** and -**failed to establish CHILD_SA** which refers that the problem is in -the IPsec(ESP) proposal mismatch. - -The reason of this problem is showed on the responder side. - -.. code-block:: none - - Jun 23 08:16:12 charon[2440]: 01[CFG] <PEER|5> received proposals: ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ - Jun 23 08:16:12 charon-systemd[2440]: received proposals: ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ - Jun 23 08:16:12 charon[2440]: 01[CFG] <PEER|5> configured proposals: ESP:AES_CBC_128/HMAC_SHA1_96/MODP_2048/NO_EXT_SEQ - Jun 23 08:16:12 charon-systemd[2440]: configured proposals: ESP:AES_CBC_128/HMAC_SHA1_96/MODP_2048/NO_EXT_SEQ - Jun 23 08:16:12 charon[2440]: 01[IKE] <PEER|5> no acceptable proposal found - Jun 23 08:16:12 charon-systemd[2440]: no acceptable proposal found - Jun 23 08:16:12 charon[2440]: 01[IKE] <PEER|5> failed to establish CHILD_SA, keeping IKE_SA - -Encryption **AES_CBC_128** is configured in IKE policy on the responder but **AES_CBC_256** -is configured on the initiator side. - -Prefixes in Policies Mismatch -============================= - -As in previous situation, IKE SA is in up state but IPsec SA is not up. -According to logs we can see **TS_UNACCEPTABLE** notification. It means -that prefixes (traffic selectors) mismatch on both sides - -Initiator: - -.. code-block:: none - - Jun 23 14:13:17 charon[4996]: 11[IKE] <PEER|1> received TS_UNACCEPTABLE notify, no CHILD_SA built - Jun 23 14:13:17 charon-systemd[4996]: maximum IKE_SA lifetime 29437s - Jun 23 14:13:17 charon[4996]: 11[IKE] <PEER|1> failed to establish CHILD_SA, keeping IKE_SA - Jun 23 14:13:17 charon-systemd[4996]: received TS_UNACCEPTABLE notify, no CHILD_SA built - Jun 23 14:13:17 charon-systemd[4996]: failed to establish CHILD_SA, keeping IKE_SA - -The reason of this problem is showed on the responder side. - -.. code-block:: none - - Jun 23 14:13:19 charon[2440]: 01[IKE] <PEER|7> traffic selectors 10.0.2.0/24 === 10.0.0.0/24 unacceptable - Jun 23 14:13:19 charon-systemd[2440]: traffic selectors 10.0.2.0/24 === 10.0.0.0/24 unacceptable - Jun 23 14:13:19 charon[2440]: 01[IKE] <PEER|7> failed to establish CHILD_SA, keeping IKE_SA - Jun 23 14:13:19 charon-systemd[2440]: failed to establish CHILD_SA, keeping IKE_SA - Jun 23 14:13:19 charon[2440]: 01[ENC] <PEER|7> generating IKE_AUTH response 1 [ IDr AUTH N(MOBIKE_SUP) N(NO_ADD_ADDR) N(TS_UNACCEPT) ] - Jun 23 14:13:19 charon-systemd[2440]: generating IKE_AUTH response 1 [ IDr AUTH N(MOBIKE_SUP) N(NO_ADD_ADDR) N(TS_UNACCEPT) ] - -.. start_vyoslinter - -Traffic selectors **10.0.2.0/24 === 10.0.0.0/24** are unacceptable on the -responder side. - - |
