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| author | Daniil Baturin <daniil@vyos.io> | 2026-05-06 14:08:24 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2026-05-06 14:08:24 +0100 |
| commit | dfea790b36ddab4c6661436c8eed3cea7af5bd3a (patch) | |
| tree | c1a9a432839a7ce7aecc4072750d476ae6186248 /docs/configuration/interfaces/md-openvpn-examples.md | |
| parent | 4b36114e053ee11d0cb264a1e4cfe4692d78f194 (diff) | |
| download | vyos-documentation-dfea790b36ddab4c6661436c8eed3cea7af5bd3a.tar.gz vyos-documentation-dfea790b36ddab4c6661436c8eed3cea7af5bd3a.zip | |
Revert "Add incremental RST-to-MyST swap mechanism (#1857)" (#1892)
This reverts commit 4b36114e053ee11d0cb264a1e4cfe4692d78f194.
Diffstat (limited to 'docs/configuration/interfaces/md-openvpn-examples.md')
| -rw-r--r-- | docs/configuration/interfaces/md-openvpn-examples.md | 769 |
1 files changed, 0 insertions, 769 deletions
diff --git a/docs/configuration/interfaces/md-openvpn-examples.md b/docs/configuration/interfaces/md-openvpn-examples.md deleted file mode 100644 index 817e6868..00000000 --- a/docs/configuration/interfaces/md-openvpn-examples.md +++ /dev/null @@ -1,769 +0,0 @@ -# Site-to-site - -:::{todo} -Convert raw command blocks in this file to cfgcmd/opcmd directives for command coverage tracking. -::: - -OpenVPN is popular for client-server setups, but its site-to-site mode is less common and often not supported by router appliances. Despite limited support, it is effective for quickly establishing tunnels between routers. - -As of VyOS 1.4, OpenVPN site-to-site mode can use either pre-shared keys or x.509 certificates. - -Pre-shared key mode is now deprecated and will be removed from future OpenVPN versions. VyOS will also discontinue support for this option because pre-shared keys are significantly less secure than TLS. - -We will configure OpenVPN with self-signed certificates, and then discuss the legacy pre-shared key mode. - -In both cases, we will use the following settings: - -- The public IP address of the local VPN endpoint is 198.51.100.10. -- The public IP address of the remote VPN endpoint is 203.0.113.11. -- The tunnel uses 10.255.1.1 for the local IP address and 10.255.1.2 for the remote IP address. -- The local site has a subnet of 10.0.0.0/16. -- The remote site has a subnet of 10.1.0.0/16. -- The official OpenVPN port 1194 is reserved for client VPN. For site-to-site VPN, port 1195 is used. -- The `persistent-tunnel` directive allows us to configure tunnel-related attributes, such as firewall policy, as we would on any standard network interface. -- If known, the remote router\'s IP address can be configured using the `remote-host` directive. If unknown, it can be omitted. We assume the remote router has a dynamic IP address. - - - -## Set up site-to-site certificates - -Deploying a complete Public Key Infrastructure (PKI) with a Certificate Authority (CA) would overcomplicate site-to-site OpenVPN setups, which are primarily designed for simplicity. To keep their configuration simple without compromising security, VyOS 1.4 and later lets you verify self-signed certificates using certificate fingerprints. - -Generate a self-signed certificate on each router, preferably using the Elliptic Curve (EC) type. In configuration mode, run the following command: `run generate pki certificate self-signed install <name>`. This adds the certificate to the configuration session\'s `pki` subtree. Review and commit the changes. - -``` none -vyos@vyos# run generate pki certificate self-signed install openvpn-local -Enter private key type: [rsa, dsa, ec] (Default: rsa) ec -Enter private key bits: (Default: 256) -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) -Do you want to configure Subject Alternative Names? [y/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] -2 value(s) installed. Use "compare" to see the pending changes, and "commit" to apply. -[edit] - -vyos@vyos# compare -[pki] -+ certificate openvpn-local { -+ certificate "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" -+ private { -+ key "MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgtOeEb0dMb5P/2Exi09WWvk6Cvz0oOBoDuP68ZimS2LShRANCAASp7D0vE3SKSAWAzr/lw9Eq9Q89r247AJR6ec/GT26AIcVA1bsongV1YaWvRwzTPC/yi5pkzV/PcT/WU7JQIyMW" -+ } -+ } - -[edit] - -vyos@vyos# commit -``` - -You do **not** need to copy the certificate to the other router. Instead, retrieve its SHA-256 fingerprint. Since OpenVPN currently supports only SHA-256 fingerprints, use the following command: - -``` none -vyos@vyos# run show pki certificate openvpn-local fingerprint sha256 -5C:B8:09:64:8B:59:51:DC:F4:DF:2C:12:5C:B7:03:D1:68:94:D7:5B:62:C2:E1:83:79:F1:F0:68:B2:81:26:79 -``` - -::::{note} -Certificate names are arbitrary. While `openvpn-local` and `openvpn-remote` are used here, you may choose any names. -:::: - -Repeat the procedure on the other router. - -## Set up site-to-site OpenVPN - -Local configuration: - -``` none -Configure the tunnel: - -set interfaces openvpn vtun1 mode site-to-site -set interfaces openvpn vtun1 protocol udp -set interfaces openvpn vtun1 persistent-tunnel -set interfaces openvpn vtun1 remote-host '203.0.113.11' # Public IP of the other side -set interfaces openvpn vtun1 local-port '1195' -set interfaces openvpn vtun1 remote-port '1195' -set interfaces openvpn vtun1 local-address '10.255.1.1' # Local IP of vtun interface -set interfaces openvpn vtun1 remote-address '10.255.1.2' # Remote IP of vtun interface -set interfaces openvpn vtun1 tls certificate 'openvpn-local' # The self-signed certificate -set interfaces openvpn vtun1 tls peer-fingerprint <remote cert fingerprint> # The output of 'run show pki certificate <name> fingerprint sha256' on the remote router -set interfaces openvpn vtun1 tls role active -``` - -Remote configuration: - -``` none -set interfaces openvpn vtun1 mode site-to-site -set interfaces openvpn vtun1 protocol udp -set interfaces openvpn vtun1 persistent-tunnel -set interfaces openvpn vtun1 remote-host '198.51.100.10' # Pub IP of other site -set interfaces openvpn vtun1 local-port '1195' -set interfaces openvpn vtun1 remote-port '1195' -set interfaces openvpn vtun1 local-address '10.255.1.2' # Local IP of vtun interface -set interfaces openvpn vtun1 remote-address '10.255.1.1' # Remote IP of vtun interface -set interfaces openvpn vtun1 tls certificate 'openvpn-remote' # The self-signed certificate -set interfaces openvpn vtun1 tls peer-fingerprint <local cert fingerprint> # The output of 'run show pki certificate <name> fingerprint sha256 on the local router -set interfaces openvpn vtun1 tls role passive -``` - - -## Set up pre-shared keys - -Before VyOS 1.4, site-to-site OpenVPN without PKI required pre-shared keys. This option is still available but is deprecated and will be removed in future releases. If you need to set up a tunnel to an older VyOS version or a system with older OpenVPN, you still need to use pre-shared keys. - -First, generate a key by running `run generate pki openvpn shared-secret install <name>` in configuration mode. You can use any name; in this example, we use `s2s`. - -``` none -vyos@local# run generate pki openvpn shared-secret install s2s -2 value(s) installed. Use "compare" to see the pending changes, and "commit" to apply. -[edit] -vyos@local# compare -[pki openvpn shared-secret] -+ s2s { -+ key "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" -+ version "1" -+ } - -[edit] - -vyos@local# commit -[edit] -``` - -Next, install the key on the remote router: - -``` none -vyos@remote# set pki openvpn shared-secret s2s key <generated key string> -``` - -Finally, configure the key in your OpenVPN interface settings: - -``` none -set interfaces openvpn vtun1 shared-secret-key s2s -``` - - -## Set up firewall exceptions - -To allow OpenVPN traffic to pass through the WAN interface, create a firewall exception: - -``` none -set firewall ipv4 name OUTSIDE_LOCAL rule 10 action 'accept' -set firewall ipv4 name OUTSIDE_LOCAL rule 10 description 'Allow established/related' -set firewall ipv4 name OUTSIDE_LOCAL rule 10 state 'established' -set firewall ipv4 name OUTSIDE_LOCAL rule 10 state 'related' -set firewall ipv4 name OUTSIDE_LOCAL rule 20 action 'accept' -set firewall ipv4 name OUTSIDE_LOCAL rule 20 description 'OpenVPN_IN' -set firewall ipv4 name OUTSIDE_LOCAL rule 20 destination port '1195' -set firewall ipv4 name OUTSIDE_LOCAL rule 20 log -set firewall ipv4 name OUTSIDE_LOCAL rule 20 protocol 'udp' -``` - -Apply the OUTSIDE_LOCAL firewall group to the WAN interface and to the input filter for traffic destined for the router itself: - -``` none -set firewall ipv4 input filter rule 10 action 'jump' -set firewall ipv4 input filter rule 10 inbound-interface name eth0 -set firewall ipv4 input filter rule 10 jump-target OUTSIDE_LOCAL -``` - -Static routing: - -Configure static routes by referencing the tunnel interface. For example, if the local router\'s network is `10.0.0.0/16` and the remote router\'s network is `10.1.0.0/16`, define the routes as follows: - -Local configuration: - -``` none -set protocols static route 10.1.0.0/16 interface vtun1 -``` - -Remote configuration: - -``` none -set protocols static route 10.0.0.0/16 interface vtun1 -``` - -As with standard Ethernet interfaces, you can apply firewall policies to the tunnel interface for input, output, and forward directions. - -If you use multiple tunnels, OpenVPN must distinguish between them beyond just the pre-shared key. To achieve this, assign either unique IP addresses or unique ports to each tunnel. - -Verify OpenVPN status using the show openvpn operational commands. - -``` none -vyos@vyos:~$ show openvpn site-to-site - -OpenVPN status on vtun1 - -Client CN Remote Host Tunnel IP Local Host TX bytes RX bytes Connected Since ------------ ----------------- ----------- ------------ ---------- ---------- ----------------- -N/A 10.110.12.54:1195 N/A N/A 504.0 B 656.0 B N/A -``` - - -### Server-client - -In OpenVPN's server-client mode, the server acts as a central hub, allowing multiple clients to connect and securely route their traffic or access a private network. Multi-client server is the most popular OpenVPN mode for routers. - -## Set up server-client certificates - -Server-client mode always uses x.509 authentication and therefore requires a PKI setup. The PKI utility now simplifies the creation of Certificate Authorities (CAs), server and client certificates, and Diffie-Hellman keys directly in VyOS using configuration or operational mode commands. - -On the server, generate all certificates by running the following commands in configuration mode. The certificates will be added to the configuration session\'s PKI subtree. - -Certificate Authority (CA): - -``` none -vyos@vyos# run generate pki ca install ca-1 -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) ca-1 -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] -2 value(s) installed. Use "compare" to see the pending changes, and "commit" to apply. -[edit] -vyos@vyos# compare -[pki] -+ ca ca-1 { -+ certificate "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" -+ private { -+ key "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" -+ } -+ } - -[edit] -vyos@vyos# commit -``` - -Server certificate: - -``` none -vyos@vyos# run generate pki certificate sign ca-1 install srv-1 -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) srv-1 -Do you want to configure Subject Alternative Names? [y/N] -Enter how many days certificate will be valid: (Default: 365) -Enter certificate type: (client, server) (Default: server) 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] -2 value(s) installed. Use "compare" to see the pending changes, and "commit" to apply. -[edit] -vyos@vyos# compare -[pki certificate] -+ srv-1 { -+ certificate "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" -+ private { -+ key "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" -+ } -+ } - -[edit] -vyos@vyos# commit -``` - -Diffie-Hellman key: - -``` none -vyos@vyos# run generate pki dh install dh-1 -Enter DH parameters key size: (Default: 2048) -Generating parameters... -1 value(s) installed. Use "compare" to see the pending changes, and "commit" to apply. -[edit] -vyos@vyos# compare -[pki] -+ dh dh-1 { -+ parameters "MIIBCAKCAQEAp25kxwZeLZ7wcbRii5E5RD4uWCUOBxarzKEE0msa84omh5nZ9dv/4bfJw4gIXlA2+sGc2lLV/jajZminMryiSwJdisyVuUdOB7sJWZwrzHBAY0qFbNyaRMVJBar2xVm+XcKd3A2eNTEgn10G7rPPvf6CJ5isUKFaKT8ymUv+mI0upLneYdGs8/yS3sAojzeulCf49fa5SiaGCcZZkdOI3Nby1u/ZG4okqJ2wE2c2hRVLs1k5qrrono0OF4Dh0B91ihnywRfp1xPYeqpiln+OPh+PPgTuBxkz4VxwRDoQ+NhVr/LOCb3vbhnyFisxI0w4r3109cA3QiDmo1L14aKl1wIBAg==" -+ } - -[edit] -vyos@vyos# commit -``` - -Client certificate: - -``` none -vyos@vyos:~$ generate pki certificate sign ca-1 install client1 -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) client1 -Do you want to configure Subject Alternative Names? [y/N] -Enter how many days certificate will be valid: (Default: 365) -Enter certificate type: (client, server) (Default: server) client -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] -You are not in configure mode, commands to install manually from configure mode: -set pki certificate client1 certificate 'MIIDrjCCApagAwIBAgIUPvtffeYTdoOiHxu++wdrjHwwVX4wDQYJKoZIhvcNAQELBQAwVDELMAkGA1UEBhMCR0IxEzARBgNVBAgMClNvbWUtU3RhdGUxEjAQBgNVBAcMCVNvbWUtQ2l0eTENMAsGA1UECgwEVnlPUzENMAsGA1UEAwwEY2EtMTAeFw0yNTA2MTExMTQxMDlaFw0yNjA2MTExMTQxMDlaMFcxCzAJBgNVBAYTAkdCMRMwEQYDVQQIDApTb21lLVN0YXRlMRIwEAYDVQQHDAlTb21lLUNpdHkxDTALBgNVBAoMBFZ5T1MxEDAOBgNVBAMMB2NsaWVudDEwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC9H6E6gm0PfXO1n/WoA9xlg89/bnScLmfztVDn1uyNn8epE6zAi2GWBhtj4ixLllIwLdkJ7L2mF3yUZtA1Q0oYbGIqTbnaZ37JydCygVGnlLT7UX9zfRfS3KebCIvIte7OyCmnUfVfFzdIsp+4LI3S2wX/9Vyn4UBAR8QQNbezRB3XPMk9gzULnuLhmEDP6GVcPq7RzGXoXUMqsCxfEOJBjej0y4ANKH07HGVVrfVRiY+zlGkM4TFjVuZKnEA0BO6dhOA0E+7gsIXsC06UzzatkjsyWHpb2/DOECIifBoYej9DITu8VxyyZmgaINHEn2gGb0LRHO7rvQapc+XZ2z9DAgMBAAGjdTBzMAwGA1UdEwEB/wQCMAAwDgYDVR0PAQH/BAQDAgeAMBMGA1UdJQQMMAoGCCsGAQUFBwMCMB0GA1UdDgQWBBQnUyqEzG+AqZzsdSud5MDqsOxiXTAfBgNVHSMEGDAWgBQAb2W+vsDMn/Li9j9eVbFeu77qbTANBgkqhkiG9w0BAQsFAAOCAQEAplItvZpoX/joG3QREu9tHVKwDTmXB2lwUM5G8iKPgd6D6oOILZMe2KuvWt12dcdEzUCGfJwJJ8M8R2WD0OmcLdFqvM/8UM1hYzUP2BCnFCLtElVD+b4wMlQNpdHqNbdckw8J4MLQlhUgu9rZAZ0XjWCprr+U50bX++vYRw7Un3Ds6ETEvjflm5WAPb2e0V1hhISPl8K+VXO7RAwxy0DHcDuR+YaD+hnNgMsJV3/QwA17Iy8x86RpOgqmesbt0U7e9Rmo81aVgiy/V4OCV7u6bPX03fmZNS8UwwJuRUlxkjO+epHNYB2cnOcjSkUxaIJ9Hv3tMWHQEtbVZsNYSOZozw==' -set pki certificate client1 private key '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' -``` - -Manually copy the CA, client certificate, and Diffie-Hellman key to the client device, then commit them before configuring the OpenVPN interface. - -For more options, refer to {ref}`configuration/pki/index:pki`. - -## Set up server-client OpenVPN - -The following example demonstrates the most complicated scenario: each client acts as a router with its own subnet (e.g., an HQ and multiple branch offices). Simpler setups are subsets of it. - -In this scenario, the 10.23.1.0/24 network is used for client tunnel endpoints, and all client subnets belong to 10.23.0.0/20. Each client needs access to the 192.168.0.0/16 network. - -Server configuration: - -``` none -set interfaces openvpn vtun10 encryption data-ciphers 'aes256' -set interfaces openvpn vtun10 hash 'sha512' -set interfaces openvpn vtun10 local-host '172.18.201.10' -set interfaces openvpn vtun10 local-port '1194' -set interfaces openvpn vtun10 mode 'server' -set interfaces openvpn vtun10 persistent-tunnel -set interfaces openvpn vtun10 protocol 'udp' -set interfaces openvpn vtun10 server client client1 ip '10.23.1.10' -set interfaces openvpn vtun10 server client client1 subnet '10.23.2.0/25' -set interfaces openvpn vtun10 server domain-name 'vyos.net' -set interfaces openvpn vtun10 server max-connections '250' -set interfaces openvpn vtun10 server name-server '172.16.254.30' -set interfaces openvpn vtun10 server subnet '10.23.1.0/24' -set interfaces openvpn vtun10 server topology 'subnet' -set interfaces openvpn vtun10 tls ca-certificate ca-1 -set interfaces openvpn vtun10 tls certificate srv-1 -set interfaces openvpn vtun10 tls dh-params dh-1 -``` - -The configuration above uses the default 1194/UDP port, 256-bit AES encryption, SHA-512 for HMAC authentication, and the persistent-tunnel option. Persistent-tunnel is recommended as it keeps the TUN/TAP device active during connection resets or daemon reloads. Clients are identified by the CN attribute in their SSL certificates. - -To grant clients access to a specific network behind the router, use the push-route option to automatically install the appropriate route on each client. - -``` none -set interfaces openvpn vtun10 server push-route 192.168.0.0/16 -``` - -OpenVPN does not automatically create kernel routes for client subnets when clients connect; it only uses client-subnet association internally. Therefore, you must manually create a route to the 10.23.0.0/20 network: - -``` none -set protocols static route 10.23.0.0/20 interface vtun10 -``` - - -## Set up OpenVPN client - -VyOS can operate not only as an OpenVPN site-to-site peer or a server for multiple clients, but also as an OpenVPN client. Any VyOS OpenVPN interface can be configured to connect to another VyOS or third-party OpenVPN server. - -Client configuration: - -``` none -set interfaces openvpn vtun10 encryption data-ciphers 'aes256' -set interfaces openvpn vtun10 hash 'sha512' -set interfaces openvpn vtun10 mode 'client' -set interfaces openvpn vtun10 persistent-tunnel -set interfaces openvpn vtun10 protocol 'udp' -set interfaces openvpn vtun10 remote-host '172.18.201.10' -set interfaces openvpn vtun10 remote-port '1194' -set interfaces openvpn vtun10 tls ca-certificate ca-1 -set interfaces openvpn vtun10 tls certificate client1 -``` - - -## Verification - -Check the tunnel status: - -``` none -vyos@vyos:~$ show openvpn server - -OpenVPN status on vtun10 - -Client CN Remote Host Tunnel IP Local Host TX bytes RX bytes Connected Since ------------ ------------------ ----------- ---------------- ---------- ---------- ------------------- -client1 172.16.12.54:33166 10.23.1.10 172.18.201.10:1194 3.4 KB 3.4 KB 2024-06-11 12:07:25 -``` - - -### Server bridge - -In Ethernet bridging configurations, an OpenVPN interface operating in server mode with the device type set to TAP can be added to a bridge. By encapsulating entire Ethernet frames (up to 1514 bytes) rather than just IP packets (up to 1500 bytes), this setup enables clients to transmit Layer 2 frames through the OpenVPN tunnel. - -The following is a basic configuration example: - -Server side: - -``` none -set interfaces bridge br10 member interface eth1.10 -set interfaces bridge br10 member interface vtun10 -set interfaces openvpn vtun10 device-type 'tap' -set interfaces openvpn vtun10 encryption data-ciphers 'aes192' -set interfaces openvpn vtun10 hash 'sha256' -set interfaces openvpn vtun10 local-host '172.18.201.10' -set interfaces openvpn vtun10 local-port '1194' -set interfaces openvpn vtun10 mode 'server' -set interfaces openvpn vtun10 server bridge gateway '10.10.0.1' -set interfaces openvpn vtun10 server bridge start '10.10.0.100' -set interfaces openvpn vtun10 server bridge stop '10.10.0.200' -set interfaces openvpn vtun10 server bridge subnet-mask '255.255.255.0' -set interfaces openvpn vtun10 server topology 'subnet' -set interfaces openvpn vtun10 tls ca-certificate 'ca-1' -set interfaces openvpn vtun10 tls certificate 'srv-1' -set interfaces openvpn vtun10 tls dh-params 'dh-1' -``` - -Client side: - -``` none -set interfaces openvpn vtun10 device-type 'tap' -set interfaces openvpn vtun10 encryption data-ciphers 'aes192' -set interfaces openvpn vtun10 hash 'sha256' -set interfaces openvpn vtun10 mode 'client' -set interfaces openvpn vtun10 protocol 'udp' -set interfaces openvpn vtun10 remote-host '172.18.201.10' -set interfaces openvpn vtun10 remote-port '1194' -set interfaces openvpn vtun10 tls ca-certificate 'ca-1' -set interfaces openvpn vtun10 tls certificate 'client-1' -``` - - -### Server LDAP authentication - -## LDAP - -Enterprise installations usually include a directory service to centralize employee password management. VyOS and OpenVPN support using LDAP and Active Directory as a single user backend. - -Authentication is performed by the `openvpn-auth-ldap.so` plugin, included with every VyOS installation. To use it, you must create a dedicated configuration file. -**Best practice:** Store the configuration file in the `/config` directory to ensure it is preserved after image updates. - -``` none -set interfaces openvpn vtun0 openvpn-option "--plugin /usr/lib/openvpn/openvpn-auth-ldap.so /config/auth/ldap-auth.config" -``` - -A sample configuration file is shown below: - -``` none -<LDAP> -# LDAP server URL -URL ldap://ldap.example.com -# Bind DN (If your LDAP server doesn't support anonymous binds) -BindDN cn=LDAPUser,dc=example,dc=com -# Bind Password password -Password S3cr3t -# Network timeout (in seconds) -Timeout 15 -</LDAP> - -<Authorization> -# Base DN -BaseDN "ou=people,dc=example,dc=com" -# User Search Filter -SearchFilter "(&(uid=%u)(objectClass=shadowAccount))" -# Require Group Membership - allow all users -RequireGroup false -</Authorization> -``` - - -### Active Directory - -A sample configuration file is shown below: - -``` none -<LDAP> - # LDAP server URL - URL ldap://dc01.example.com - # Bind DN (If your LDAP server doesn’t support anonymous binds) - BindDN CN=LDAPUser,DC=example,DC=com - # Bind Password - Password mysecretpassword - # Network timeout (in seconds) - Timeout 15 - # Enable Start TLS - TLSEnable no - # Follow LDAP Referrals (anonymously) - FollowReferrals no -</LDAP> - -<Authorization> - # Base DN - BaseDN "DC=example,DC=com" - # User Search Filter, user must be a member of the VPN AD group - SearchFilter "(&(sAMAccountName=%u)(memberOf=CN=VPN,OU=Groups,DC=example,DC=com))" - # Require Group Membership - RequireGroup false # already handled by SearchFilter - <Group> - BaseDN "OU=Groups,DC=example,DC=com" - SearchFilter "(|(cn=VPN))" - MemberAttribute memberOf - </Group> -</Authorization> -``` - -If you only want to check that the user account is enabled and can authenticate (against the primary group), the following snippet is sufficient: - -``` none -<LDAP> - URL ldap://dc01.example.com - BindDN CN=SA_OPENVPN,OU=ServiceAccounts,DC=example,DC=com - Password ThisIsTopSecret - Timeout 15 - TLSEnable no - FollowReferrals no -</LDAP> - -<Authorization> - BaseDN "DC=example,DC=com" - SearchFilter "sAMAccountName=%u" - RequireGroup false -</Authorization> -``` - -A complete example of an LDAP authentication configuration for OpenVPN is shown below: - -``` none -vyos@vyos# show interfaces openvpn - openvpn vtun0 { - mode server - openvpn-option "--tun-mtu 1500 --fragment 1300 --mssfix" - openvpn-option "--plugin /usr/lib/openvpn/openvpn-auth-ldap.so /config/auth/ldap-auth.config" - openvpn-option "--push redirect-gateway" - openvpn-option --duplicate-cn - openvpn-option "--verify-client-cert none" - openvpn-option --comp-lzo - openvpn-option --persist-key - openvpn-option --persist-tun - server { - domain-name example.com - max-connections 5 - name-server 203.0.113.0.10 - name-server 198.51.100.3 - subnet 172.18.100.128/29 - } - tls { - ca-certificate ca.crt - certificate server.crt - dh-params dh1024.pem - } - } -``` - -For a detailed example, refer to {doc}`OpenVPN with LDAP</configexamples/autotest/OpenVPN_with_LDAP/OpenVPN_with_LDAP>`. - -### Multi-factor authentication - -VyOS supports multi-factor authentication (MFA) or two-factor authentication using Time-based One-Time Passwords (TOTP). It is compatible with Google Authenticator and other software tokens. - -## Server side - -``` none -set interfaces openvpn vtun20 encryption cipher 'aes256' -set interfaces openvpn vtun20 hash 'sha512' -set interfaces openvpn vtun20 mode 'server' -set interfaces openvpn vtun20 persistent-tunnel -set interfaces openvpn vtun20 server client user1 -set interfaces openvpn vtun20 server mfa totp challenge 'disable' -set interfaces openvpn vtun20 server subnet '10.10.2.0/24' -set interfaces openvpn vtun20 server topology 'subnet' -set interfaces openvpn vtun20 tls ca-certificate 'openvpn_vtun20' -set interfaces openvpn vtun20 tls certificate 'openvpn_vtun20' -set interfaces openvpn vtun20 tls dh-params 'dh-pem' -``` - -A TOTP secret is created for each client in the OpenVPN server configuration. To display authentication information, use the following command: `show interfaces openvpn vtun20 user user1 mfa qrcode`. - -Example: - -``` none -vyos@vyos:~$ sh interfaces openvpn vtun20 user user1 mfa qrcode -█████████████████████████████████████ -█████████████████████████████████████ -████ ▄▄▄▄▄ █▀▄▀ ▀▀▄▀ ▀▀▄ █ ▄▄▄▄▄ ████ -████ █ █ █▀▀▄ █▀▀▀█▀██ █ █ █ ████ -████ █▄▄▄█ █▀█ ▄ █▀▀ █▄▄▄█ █▄▄▄█ ████ -████▄▄▄▄▄▄▄█▄█ █ █ ▀ █▄▀▄█▄▄▄▄▄▄▄████ -████▄▄ ▄ █▄▄ ▄▀▄█▄ ▄▀▄█ ▄▄▀ ▀▄█ ▀████ -████ ▀██▄▄▄█▄ ██ █▄▄▄▄ █▄▀█ █ █▀█████ -████ ▄█▀▀▄▄ ▄█▀ ▀▄ ▄▄▀▄█▀▀▀ ▄▄▀████ -████▄█ ▀▄▄▄▀ ▀ ▄█ ▄ █▄█▀ █▀ █▀█████ -████▀█▀ ▀ ▄█▀▄▀▀█▄██▄█▀▀ ▀ ▀ ▄█▀████ -████ ██▄▄▀▄▄█ ██ ▀█ ▄█ ▀▄█ █▀██▀████ -████▄███▄█▄█ ▀█▄ ██▄▄▄█▀ ▄▄▄ █ ▀ ████ -████ ▄▄▄▄▄ █▄█▀▄ ▀▄ ▀█▀ █▄█ ██▀█████ -████ █ █ █ ▄█▀█▀▀▄ ▄▀▀▄▄▄▄▄▄ ████ -████ █▄▄▄█ █ ▄ ▀ █▄▄▄██▄▀█▄▀▄█▄ █████ -████▄▄▄▄▄▄▄█▄██▄█▄▄▄▄▄█▄█▄█▄██▄██████ -█████████████████████████████████████ -█████████████████████████████████████ -``` - -Scan the QR code to add the user account to Google Authenticator. On the client side, use the generated OTP as the password. - -### Authentication with username/password - -An OpenVPN server can securely obtain a username and password from a connecting client and use this information for authentication. - -First, configure the server to use an authentication plugin or script. The server calls this plugin every time a client tries to connect, passing it the client\'s credentials. - -In the following example, the `--auth-user-pass-verify` directive is used with the via-env method and a specified script path to validate the client\'s username and password. - -## Server configuration - -``` none -set interfaces openvpn vtun10 local-port '1194' -set interfaces openvpn vtun10 mode 'server' -set interfaces openvpn vtun10 openvpn-option '--auth-user-pass-verify /config/auth/check_user.sh via-env' -set interfaces openvpn vtun10 openvpn-option '--script-security 3' -set interfaces openvpn vtun10 persistent-tunnel -set interfaces openvpn vtun10 protocol 'udp' -set interfaces openvpn vtun10 server client client-1 ip '10.10.10.55' -set interfaces openvpn vtun10 server push-route 192.0.2.0/24 -set interfaces openvpn vtun10 server subnet '10.10.10.0/24' -set interfaces openvpn vtun10 server topology 'subnet' -set interfaces openvpn vtun10 tls ca-certificate 'ca-1' -set interfaces openvpn vtun10 tls certificate 'srv-1' -set interfaces openvpn vtun10 tls dh-params 'dh-1' -``` - -The /config/auth/check_user.sh example includes two test users: - -``` none -#!/bin/bash -USERNAME="$username" -PASSWORD="$password" - -# Replace this with real user checking logic or use getent -if [[ "$USERNAME" == "client1" && "$PASSWORD" == "pass123" ]]; then - exit 0 -elif [[ "$USERNAME" == "peter" && "$PASSWORD" == "qwerty" ]]; then - exit 0 -else - exit 1 -fi -``` - - -## Client configuration - -Storing the client certificate locally lets you generate the OpenVPN client configuration file. Use the following command: - -``` none -vyos@vyos:~$ generate openvpn client-config interface vtun10 ca ca-1 certificate client1 -``` - -Copy the output and save it as a .ovpn file. Add the `auth-user-pass` directive to the file. This instructs the OpenVPN client to prompt the user for a username and password, which are then sent to the server over the TLS channel. You can now import this file into any OpenVPN client application. - -``` none -client -dev tun -proto udp -remote 192.168.77.10 1194 - -remote-cert-tls server -proto udp -dev tun -dev-type tun -persist-key -persist-tun -verb 3 -auth-user-pass - - -<ca> ------BEGIN CERTIFICATE----- -MIIDlzCCAn+gAwIBAgIUQW7AtPu0Qzp7VzT0TyYx83/ME8swDQYJKoZIhvcNAQEL -BQAwVDELMAkGA1UEBhMCR0IxEzARBgNVBAgMClNvbWUtU3RhdGUxEjAQBgNVBAcM -CVNvbWUtQ2l0eTENMAsGA1UECgwEVnlPUzENMAsGA1UEAwwEY2EtMTAeFw0yNTA2 -MTExMTIyMjJaFw0zMDA2MTAxMTIyMjJaMFQxCzAJBgNVBAYTAkdCMRMwEQYDVQQI -DApTb21lLVN0YXRlMRIwEAYDVQQHDAlTb21lLUNpdHkxDTALBgNVBAoMBFZ5T1Mx -DTALBgNVBAMMBGNhLTEwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDi -+v6i241T9ABxq1ngjWxDQITkqjV0nq2Jb3HSSuQpXRCu7DWdQZlbvnMHnkV/WTL0 -RNgkhS4iV/WYhE+bLihwiZ0GTeQnUd1QJSkusFROX46w6kKXYUR5IQtcBC+vdky8 -PESynPd+DXsJn5X9JTWqDeviUAQz/ZjDzWk+71MBCqa+Zps1zpIjK0ywn7pR/HnD -rxJOQXlBMNgvbv8U3IAZ2jJp0jTB8TnuDtWSA+XZejMm/EN/AWUQyliX6OJFSCIh -BL2BZ9lmVms4/HkRpbd50k3vvCoz+lAOEE6VsH0fEdLC3lZ+CtXZ7kjp2wdWWuSs -5ggIJYZZkixsCisbtEmbAgMBAAGjYTBfMA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0P -AQH/BAQDAgGGMB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcDATAdBgNVHQ4E -FgQUAG9lvr7AzJ/y4vY/XlWxXru+6m0wDQYJKoZIhvcNAQELBQADggEBAKsu4eZa -8Fha9aKfuKqlGQHPpEFfVDaVJmebw0uMw+b5Y8EpBxzZrgbqbk3Mty8pBjNa9jkZ -zph04gHN4pR6kg3iQlUKGxZUfsB9ZUjKhkgNdUI9zq1323MKEvuIuYdt61DCfBHw -Y6Xax5Ge+BahR2bXdPaQH452/+xMTqkukkpLbioTeIDg6FCU2HYPY5emDF5DDZAZ -WXtTqi0zdT3Y6FqiTvs5VuWwXCcp+HM+Lwe1/VVJhwi4CHTq0CKWnQIH5blYjmyx -zRBlrlZm4ntWlL5Mtepa1A3DJirY4kw/SqMAAh/Q9lh41JzBc8epf+OdnOzK55Ym -tmctGO2o+NBCFi0= ------END CERTIFICATE----- - -</ca> - -<cert> ------BEGIN CERTIFICATE----- -MIIDrjCCApagAwIBAgIUN6vPxDEW89cfbEFPa0tZlnsW1GkwDQYJKoZIhvcNAQEL -BQAwVDELMAkGA1UEBhMCR0IxEzARBgNVBAgMClNvbWUtU3RhdGUxEjAQBgNVBAcM -CVNvbWUtQ2l0eTENMAsGA1UECgwEVnlPUzENMAsGA1UEAwwEY2EtMTAeFw0yNTA2 -MTExMTQ0MjlaFw0yNjA2MTExMTQ0MjlaMFcxCzAJBgNVBAYTAkdCMRMwEQYDVQQI -DApTb21lLVN0YXRlMRIwEAYDVQQHDAlTb21lLUNpdHkxDTALBgNVBAoMBFZ5T1Mx -EDAOBgNVBAMMB2NsaWVudDEwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB -AQCdOWq8vdO8CznGN83uAXCuN4PcdTJaRFEdJIEfqHjlcG0MZQuPIAlDbOU+IWmu -QBmeCj7SlbYtVYo1uQOMUaIrAvxLIQUaL1Y60oLVTF5eAPrGV+NSTQR5uMApcH9/ -RcZcW530pu/QpYinKTbGkEd54so6YRVPmYbIOPNUMbnZbccpinYi5t2dqubBb585 -A7L40043VtsVVbPjQq5V0HDursvqlaMqMRcffhR8H4B4ByU/EPRK4yTKm1hi19v3 -UtRHiq74CfGtJzYtplgrLJBON7TsbIi/fEux4q1yhbKA0S66L6e5DZldRxNZOXG6 -QjEL0RkYloMgkbv/2HLCu09hAgMBAAGjdTBzMAwGA1UdEwEB/wQCMAAwDgYDVR0P -AQH/BAQDAgeAMBMGA1UdJQQMMAoGCCsGAQUFBwMCMB0GA1UdDgQWBBQCkfdfq3hv -7UtqAxq/5VDRIdgJLTAfBgNVHSMEGDAWgBQAb2W+vsDMn/Li9j9eVbFeu77qbTAN -BgkqhkiG9w0BAQsFAAOCAQEAJ43+aDVRC+y2vsu6WRG2l6zYnLoIJZW4afdKMC1a -nhTWhj4AhAt8evhVbAxi/8qhQX3yXF2bUQKdS++8AVcvZFlSES32S5eBx83AwGLt -QkgvGx+QThKmoJwrelyuS2X0XX3P0WzohYI6HzSr6p9F8KhTvSW97E6SnldpdvEM -uG1C+61/Vys7WLmDBh1PZTGE03nRp3H4Q9ynyXEEf1MK3eZkzg5H3Evj66p82pD5 -8IauRfghMHJf3tOC+y0YIoXshF3lPq4nYso5Jc/HGCHlsboCODMCnY3CZsH7/O1n -/MI710KpzZTCLnv4Qtx9JpZxR7FTddl36OOuYUXU3Gcnsg== ------END CERTIFICATE----- - -</cert> - -<key> ------BEGIN PRIVATE KEY----- -MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCdOWq8vdO8CznG -N83uAXCuN4PcdTJaRFEdJIEfqHjlcG0MZQuPIAlDbOU+IWmuQBmeCj7SlbYtVYo1 -uQOMUaIrAvxLIQUaL1Y60oLVTF5eAPrGV+NSTQR5uMApcH9/RcZcW530pu/QpYin -KTbGkEd54so6YRVPmYbIOPNUMbnZbccpinYi5t2dqubBb585A7L40043VtsVVbPj -Qq5V0HDursvqlaMqMRcffhR8H4B4ByU/EPRK4yTKm1hi19v3UtRHiq74CfGtJzYt -plgrLJBON7TsbIi/fEux4q1yhbKA0S66L6e5DZldRxNZOXG6QjEL0RkYloMgkbv/ -2HLCu09hAgMBAAECggEAOR3xRVUO9Sr816JRSQwz486eNDpNSxazgwtOb3JUTUH9 -E7onq1y/kMOgOmSIEHoP9GaTcQxbbPe86IxomhLT/50ri52YzWzx/heY2SVPyQXB -FMo79putKw0vnj5UyydNiyLrbMQyrhFc5iFmWVdz5/c4cWHwjIThPp7V4znXYwHZ -OB/Xn1NNHDNy872oQn5wZWzuA4ml0OqjU5D+Ne9srODl3r4OTo3lb1N3JuH3aOSA -cACl1JnN/KElN8IotIdweeUFAdn2jsGjZnCpGaJvZQ+2iMn6doJXHgFiF5+GMF7o -aOatglElIuqgPtB/4nvnegSL0DSnB36ojqv2PAh24wKBgQDPBt4S4muqo8SqP2e0 -8X78MyK3tz1VmgPKn3O68Vdi1V7FPz0RHRGsw/kdgxXsJlfZTWgzcq2NNFu0yPBJ -A/h7qo16mv8GW7cJCd2exjb+/oq4r5iWeqLdSsMUXN87x02LRaMNd9wz1mls1Z73 -oQ5hJ7zTtlyYXnvKPQo8X1ImjwKBgQDCaptQxZ/a3tcUQQlXAFMAScviODZd0LCL -30ZalwpNs6nVVIPoZHD3tlzWN5Es74gndfkC7/Gm2cnsOW9QQaU56q+5LeNXItW8 -rc6yXq3vNQerqJxHNUmKWwLCQtSyLRjFqpGTl/PyX2bGXQ7/zjTL3W8VMD5otf4Y -SJJB+sKjDwKBgHSVX3WvAAamFtfwwMwKuwH3IfPnQqj0BHKUfK2nvxgvJCFbzV3X -yt5Jtf3ClhPYO9xpVOa0C7va4lHaXkYf8Exj7SxAIKFKALccUStaYBoU6bW7XOhQ -w2pu8ZCEBEo7oBVv77Rj7SNb+R6K5ex5TAm2QQXQSjCb9IYc/ail3TNNAoGBALu6 -GPMrgKnlFyV1j0E1DPBwUbDEuqpoArFtDRAYXFifLVTS4PQbWIG403f9++659Gy2 -G5ZcfqiwD6xL4VJLsPF1zewvhR/0gRJJehb+GVGrkRaOHykbKUGxk75kreDGbu8f -PqaXyXS17hWIch1Lzes0jDiXdwvA//QOzztqmVq9AoGAVMbmf04+QtzckLolAP4q -Uwr5svfy14A7V3IGkwlsHZdm37L26lfxW0kpOOE7g7D6gdinuALo6oopP7RN/IDq -PLaaHaGrIoLAEVFa0bRLGsrU2q87ytwfSgdra4jmsTn+xEabdI4IgmqWgwSRvGVf -KN18e19Ssw5x7Wq0Rsw/3VM= ------END PRIVATE KEY----- - -</key> -``` - -When prompted, log in with the username and password. |
