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+.. _vpn:
+
+VPN
+===
+
+OpenVPN
+-------
+
+Traditionally hardware routers implement IPsec exclusively due to relative
+ease of implementing it in hardware and insufficient CPU power for doing
+encryption in software. Since VyOS is a software router, this is less of a
+concern. OpenVPN has been widely used on UNIX platform for a long time and is
+a popular option for remote access VPN, though it's also capable of
+site-to-site connections.
+
+The advantages of OpenVPN are:
+* It uses a single TCP or UDP connection and does not rely on packet source
+addresses, so it will work even through a double NAT: perfect for public
+hotspots and such
+
+* It's easy to setup and offers very flexible split tunneling
+
+* There's a variety of client GUI frontends for any platform
+
+The disadvantages are:
+* It's slower than IPsec due to higher protocol overhead and the fact it runs
+in user mode while IPsec, on Linux, is in kernel mode
+
+* None of the operating systems have client software installed by default
+
+In the VyOS CLI, a key point often overlooked is that rather than being
+configured using the `set vpn` stanza, OpenVPN is configured as a network
+interface using `set interfaces openvpn`.
+
+OpenVPN Site-To-Site
+^^^^^^^^^^^^^^^^^^^^
+
+While many are aware of OpenVPN as a Client VPN solution, it is often
+overlooked as a site-to-site VPN solution due to lack of support for this mode
+in many router platforms.
+
+Site-to-site mode supports x.509 but doesn't require it and can also work with
+static keys, which is simpler in many cases. In this example, we'll configure
+a simple site-to-site OpenVPN tunnel using a 2048-bit pre-shared key.
+
+First, one one of the systems generate the key using the operational command
+`generate openvpn key <filename>`. This will generate a key with the name
+provided in the `/config/auth/` directory. Once generated, you will need to
+copy this key to the remote router.
+
+In our example, we used the filename `openvpn-1.key` which we will reference
+in our configuration.
+
+* The public IP address of the local side of the VPN will be 198.51.100.10
+* The remote will be 203.0.113.11
+* The tunnel will use 10.255.1.1 for the local IP and 10.255.1.2 for the remote.
+* OpenVPN allows for either TCP or UDP. UDP will provide the lowest latency,
+ while TCP will work better for lossy connections; generally UDP is preferred
+ when possible.
+* The official port for OpenVPN is 1194, which we reserve for client VPN; we
+ will use 1195 for site-to-site VPN.
+* The `persistent-tunnel` directive will allow us to configure tunnel-related
+ attributes, such as firewall policy as we would on any normal network
+ interface.
+* If known, the IP of the remote router can be configured using the
+ `remote-host` directive; if unknown, it can be omitted. We will assume a
+ dynamic IP for our remote router.
+
+Local Configuration:
+
+.. code-block:: sh
+
+ set interfaces openvpn vtun1 mode site-to-site
+ set interfaces openvpn vtun1 protocol udp
+ set interfaces openvpn vtun1 persistent-tunnel
+ set interfaces openvpn vtun1 local-host '198.51.100.10'
+ set interfaces openvpn vtun1 local-port '1195'
+ set interfaces openvpn vtun1 remote-port '1195'
+ set interfaces openvpn vtun1 shared-secret-key-file '/config/auth/openvpn-1.key'
+ set interfaces openvpn vtun1 local-address '10.255.1.1'
+ set interfaces openvpn vtun1 remote-address '10.255.1.2'
+
+Remote Configuration:
+
+.. code-block:: sh
+
+ 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'
+ set interfaces openvpn vtun1 local-port '1195'
+ set interfaces openvpn vtun1 remote-port '1195'
+ set interfaces openvpn vtun1 shared-secret-key-file '/config/auth/openvpn-1.key'
+ set interfaces openvpn vtun1 local-address '10.255.1.2'
+ set interfaces openvpn vtun1 remote-address '10.255.1.1'
+
+The configurations above will default to using 128-bit Blowfish in CBC mode
+for encryption and SHA-1 for HMAC authentication. These are both considered
+weak, but a number of other encryption and hashing algorithms are available:
+
+For Encryption:
+
+.. code-block:: sh
+
+ vyos@vyos# set interfaces openvpn vtun1 encryption
+ Possible completions:
+ des DES algorithm
+ 3des DES algorithm with triple encryption
+ bf128 Blowfish algorithm with 128-bit key
+ bf256 Blowfish algorithm with 256-bit key
+ aes128 AES algorithm with 128-bit key
+ aes192 AES algorithm with 192-bit key
+ aes256 AES algorithm with 256-bit key
+
+For Hashing:
+
+.. code-block:: sh
+
+ vyos@vyos# set interfaces openvpn vtun1 hash
+ Possible completions:
+ md5 MD5 algorithm
+ sha1 SHA-1 algorithm
+ sha256 SHA-256 algorithm
+ sha512 SHA-512 algorithm
+
+If you change the default encryption and hashing algorithms, be sure that the
+local and remote ends have matching configurations, otherwise the tunnel will
+not come up.
+
+Static routes can be configured referencing the tunnel interface; for example,
+the local router will use a network of 10.0.0.0/16, while the remote has a
+network of 10.1.0.0/16:
+
+Local Configuration:
+
+.. code-block:: sh
+
+ set protocols static interface-route 10.1.0.0/16 next-hop-interface vtun1
+
+Remote Configuration:
+
+.. code-block:: sh
+
+ set protocols static interface-route 10.0.0.0/16 next-hop-interface vtun1
+
+Firewall policy can also be applied to the tunnel interface for `local`, `in`,
+and `out` directions and function identically to ethernet interfaces.
+
+If making use of multiple tunnels, OpenVPN must have a way to distinguish
+between different tunnels aside from the pre-shared-key. This is either by
+referencing IP address or port number. One option is to dedicate a public IP
+to each tunnel. Another option is to dedicate a port number to each tunnel
+(e.g. 1195,1196,1197...).
+
+OpenVPN status can be verified using the `show openvpn` operational commands.
+See the built-in help for a complete list of options.
+
+OpenVPN Server
+^^^^^^^^^^^^^^
+
+Multi-client server is the most popular OpenVPN mode on routers. It always uses
+x.509 authentication and therefore requires a PKI setup. This guide assumes you
+have already setup a PKI and have a CA certificate, a server certificate and
+key, a certificate revokation list, a Diffie-Hellman key exchange parameters
+file. You do not need client certificates and keys for the server setup.
+
+In this example we will use the most complicated case: a setup where each
+client is a router that has its own subnet (think HQ and branch offices), since
+simpler setups are subsets of it.
+
+Suppose you want to use 10.23.1.0/24 network for client tunnel endpoints and
+all client subnets belong to 10.23.0.0/20. All clients need access to the
+192.168.0.0/16 network.
+
+First we need to specify the basic settings. 1194/UDP is the default. The
+`persistent-tunnel` option is recommended, it prevents the TUN/TAP device from
+closing on connection resets or daemon reloads.
+
+.. code-block:: sh
+
+ set interfaces openvpn vtun10 mode server
+ set interfaces openvpn vtun10 local-port 1194
+ set interfaces openvpn vtun10 persistent-tunnel
+ set interfaces openvpn vtun10 protocol udp
+
+Then we need to specify the location of the cryptographic materials. Suppose
+you keep the files in `/config/auth/openvpn`
+
+.. code-block:: sh
+
+ set interfaces openvpn vtun10 tls ca-cert-file /config/auth/openvpn/ca.crt
+ set interfaces openvpn vtun10 tls cert-file /config/auth/openvpn/server.crt
+ set interfaces openvpn vtun10 tls key-file /config/auth/openvpn/server.key
+ set interfaces openvpn vtun10 tls crl-file /config/auth/openvpn/crl.pem
+ set interfaces openvpn vtun10 tls dh-file /config/auth/openvpn/dh2048.pem
+
+Now we need to specify the server network settings. In all cases we need to
+specify the subnet for client tunnel endpoints. Since we want clients to access
+a specific network behind out router, we will use a push-route option for
+installing that route on clients.
+
+.. code-block:: sh
+
+ set interfaces openvpn vtun10 server push-route 192.168.0.0/16
+ set interfaces openvpn vtun10 server subnet 10.23.1.0/24
+
+Since it's a HQ and branch offices setup, we will want all clients to have
+fixed addresses and we will route traffic to specific subnets through them. We
+need configuration for each client to achieve this.
+
+.. note:: Clients are identified by the CN field of their x.509 certificates,
+ in this example the CN is ``client0``:
+
+.. code-block:: sh
+
+ set interfaces openvpn vtun10 server client client0 ip 10.23.1.10
+ set interfaces openvpn vtun10 server client client0 subnet 10.23.2.0/25
+
+OpenVPN **will not** automatically create routes in the kernel for client
+subnets when they connect and will only use client-subnet association
+internally, so we need to create a route to the 10.23.0.0/20 network ourselves:
+
+.. code-block:: sh
+
+ set protocols static interface-route 10.23.0.0/20 next-hop-interface vtun10
+
+L2TP over IPsec
+---------------
+
+Example for configuring a simple L2TP over IPsec VPN for remote access (works
+with native Windows and Mac VPN clients):
+
+.. code-block:: sh
+
+ set vpn ipsec ipsec-interfaces interface eth0
+ set vpn ipsec nat-traversal enable
+ set vpn ipsec nat-networks allowed-network 0.0.0.0/0
+
+ set vpn l2tp remote-access outside-address 203.0.113.2
+ set vpn l2tp remote-access client-ip-pool start 192.168.255.1
+ set vpn l2tp remote-access client-ip-pool stop 192.168.255.254
+ set vpn l2tp remote-access ipsec-settings authentication mode pre-shared-secret
+ set vpn l2tp remote-access ipsec-settings authentication pre-shared-secret <secret>
+ set vpn l2tp remote-access authentication mode local
+ set vpn l2tp remote-access authentication local-users username <username> password <password>
+
+In the example above an external IP of 203.0.113.2 is assumed.
+
+If a local firewall policy is in place on your external interface you will need
+to open:
+
+* UDP port 500 (IKE)
+* IP protocol number 50 (ESP)
+* UDP port 1701 for IPsec
+
+In addition when NAT is detected by the VPN client ESP is encapsulated in UDP
+for NAT-traversal:
+
+* UDP port 4500 (NAT-T)
+
+Example:
+
+.. code-block:: sh
+
+ set firewall name OUTSIDE-LOCAL rule 40 action 'accept'
+ set firewall name OUTSIDE-LOCAL rule 40 destination port '50'
+ set firewall name OUTSIDE-LOCAL rule 40 protocol 'esp'
+ set firewall name OUTSIDE-LOCAL rule 41 action 'accept'
+ set firewall name OUTSIDE-LOCAL rule 41 destination port '500'
+ set firewall name OUTSIDE-LOCAL rule 41 protocol 'udp'
+ set firewall name OUTSIDE-LOCAL rule 42 action 'accept'
+ set firewall name OUTSIDE-LOCAL rule 42 destination port '4500'
+ set firewall name OUTSIDE-LOCAL rule 42 protocol 'udp'
+ set firewall name OUTSIDE-LOCAL rule 43 action 'accept'
+ set firewall name OUTSIDE-LOCAL rule 43 destination port '1701'
+ set firewall name OUTSIDE-LOCAL rule 43 ipsec 'match-ipsec'
+ set firewall name OUTSIDE-LOCAL rule 43 protocol 'udp'
+
+Also note that if you wish to allow the VPN to be used for external access you
+will need to add the appropriate source NAT rules to your configuration.
+
+.. code-block:: sh
+
+ set nat source rule 110 outbound-interface 'eth0'
+ set nat source rule 110 source address '192.168.255.0/24'
+ set nat source rule 110 translation address masquerade
+
+To be able to resolve when connected to the VPN, the following DNS rules are
+needed as well.
+
+.. code-block:: sh
+
+ set vpn l2tp remote-access dns-servers server-1 '8.8.8.8'
+ set vpn l2tp remote-access dns-servers server-2 '8.8.4.4'
+
+.. note:: Those are the `Google public DNS`_ servers. You can also use the
+ public available servers from Quad9_ (9.9.9.9) or Cloudflare_ (1.1.1.1).
+
+Established sessions can be viewed using the **show vpn remote-access**
+operational command.
+
+.. code-block:: sh
+
+ vyos@vyos:~$ show vpn remote-access
+ Active remote access VPN sessions:
+ User Proto Iface Tunnel IP TX byte RX byte Time
+ ---- ----- ----- --------- ------- ------- ----
+ vyos L2TP l2tp0 192.168.255.1 3.2K 8.0K 00h06m13s
+
+RADIUS authentication
+^^^^^^^^^^^^^^^^^^^^^
+
+The above configuration made use of local accounts on the VyOS router for
+authenticating L2TP/IPSec clients. In bigger environments usually something
+like RADIUS_ (FreeRADIUS_ or Microsoft `Network Policy Server`_, NPS) is used.
+
+VyOS supports either `local` or `radius` user authentication:
+
+.. code-block:: sh
+
+ set vpn l2tp remote-access authentication mode <local|radius>
+
+In addition one or more RADIUS_ servers can be configured to server for user
+authentication. This is done using the `radius-server` and `key` nodes:
+
+.. code-block:: sh
+
+ set vpn l2tp remote-access authentication radius-server 1.1.1.1 key 'foo'
+ set vpn l2tp remote-access authentication radius-server 2.2.2.2 key 'foo'
+
+.. note:: Some RADIUS_ severs make use of an access control list who is allowed
+ to query the server. Please configure your VyOS router in the allowed client
+ list.
+
+RADIUS source address
+*********************
+
+Yet there is no way to configure the used RADIUS_ client source IP address on
+the VyOS router, this is work in progres, see https://phabricator.vyos.net/T828.
+
+The IP address nearest to the radius server is currently used. If in doubt,
+configure all IP addresses from the VyOS router in question.
+
+Site-to-Site IPsec
+------------------
+
+Example:
+* eth1 is WAN interface
+* left subnet: 192.168.0.0/24 #s ite1, server side (i.e. locality, actually
+there is no client or server roles)
+* left local_ip: 1.1.1.1 # server side WAN IP
+* right subnet: 10.0.0.0/24 # site2,remote office side
+* right local_ip: 2.2.2.2 # remote office side WAN IP
+
+.. code-block:: sh
+
+ # server config
+ set vpn ipsec esp-group office-srv-esp compression 'disable'
+ set vpn ipsec esp-group office-srv-esp lifetime '1800'
+ set vpn ipsec esp-group office-srv-esp mode 'tunnel'
+ set vpn ipsec esp-group office-srv-esp pfs 'enable'
+ set vpn ipsec esp-group office-srv-esp proposal 1 encryption 'aes256'
+ set vpn ipsec esp-group office-srv-esp proposal 1 hash 'sha1'
+ set vpn ipsec ike-group office-srv-ike ikev2-reauth 'no'
+ set vpn ipsec ike-group office-srv-ike key-exchange 'ikev1'
+ set vpn ipsec ike-group office-srv-ike lifetime '3600'
+ set vpn ipsec ike-group office-srv-ike proposal 1 encryption 'aes256'
+ set vpn ipsec ike-group office-srv-ike proposal 1 hash 'sha1'
+ set vpn ipsec ipsec-interfaces interface 'eth1'
+ set vpn ipsec site-to-site peer 2.2.2.2 authentication mode 'pre-shared-secret'
+ set vpn ipsec site-to-site peer 2.2.2.2 authentication pre-shared-secret 'SomePreSharedKey'
+ set vpn ipsec site-to-site peer 2.2.2.2 ike-group 'office-srv-ike'
+ set vpn ipsec site-to-site peer 2.2.2.2 local-address '1.1.1.1'
+ set vpn ipsec site-to-site peer 2.2.2.2 tunnel 0 allow-nat-networks 'disable'
+ set vpn ipsec site-to-site peer 2.2.2.2 tunnel 0 allow-public-networks 'disable'
+ set vpn ipsec site-to-site peer 2.2.2.2 tunnel 0 esp-group 'office-srv-esp'
+ set vpn ipsec site-to-site peer 2.2.2.2 tunnel 0 local prefix '192.168.0.0/24'
+ set vpn ipsec site-to-site peer 2.2.2.2 tunnel 0 remote prefix '10.0.0.0/21'
+
+ # remote office config
+ set vpn ipsec esp-group office-srv-esp compression 'disable'
+ set vpn ipsec esp-group office-srv-esp lifetime '1800'
+ set vpn ipsec esp-group office-srv-esp mode 'tunnel'
+ set vpn ipsec esp-group office-srv-esp pfs 'enable'
+ set vpn ipsec esp-group office-srv-esp proposal 1 encryption 'aes256'
+ set vpn ipsec esp-group office-srv-esp proposal 1 hash 'sha1'
+ set vpn ipsec ike-group office-srv-ike ikev2-reauth 'no'
+ set vpn ipsec ike-group office-srv-ike key-exchange 'ikev1'
+ set vpn ipsec ike-group office-srv-ike lifetime '3600'
+ set vpn ipsec ike-group office-srv-ike proposal 1 encryption 'aes256'
+ set vpn ipsec ike-group office-srv-ike proposal 1 hash 'sha1'
+ set vpn ipsec ipsec-interfaces interface 'eth1'
+ set vpn ipsec site-to-site peer 1.1.1.1 authentication mode 'pre-shared-secret'
+ set vpn ipsec site-to-site peer 1.1.1.1 authentication pre-shared-secret 'SomePreSharedKey'
+ set vpn ipsec site-to-site peer 1.1.1.1 ike-group 'office-srv-ike'
+ set vpn ipsec site-to-site peer 1.1.1.1 local-address '2.2.2.2'
+ set vpn ipsec site-to-site peer 1.1.1.1 tunnel 0 allow-nat-networks 'disable'
+ set vpn ipsec site-to-site peer 1.1.1.1 tunnel 0 allow-public-networks 'disable'
+ set vpn ipsec site-to-site peer 1.1.1.1 tunnel 0 esp-group 'office-srv-esp'
+ set vpn ipsec site-to-site peer 1.1.1.1 tunnel 0 local prefix '10.0.0.0/21'
+ set vpn ipsec site-to-site peer 1.1.1.1 tunnel 0 remote prefix '192.168.0.0/24'
+
+Show status of new setup:
+
+.. code-block:: sh
+
+ vyos@srv-gw0:~$ show vpn ike sa
+ Peer ID / IP Local ID / IP
+ ------------ -------------
+ 2.2.2.2 1.1.1.1
+ State Encrypt Hash D-H Grp NAT-T A-Time L-Time
+ ----- ------- ---- ------- ----- ------ ------
+ up aes256 sha1 5 no 734 3600
+
+ vyos@srv-gw0:~$ show vpn ipsec sa
+ Peer ID / IP Local ID / IP
+ ------------ -------------
+ 2.2.2.2 1.1.1.1
+ Tunnel State Bytes Out/In Encrypt Hash NAT-T A-Time L-Time Proto
+ ------ ----- ------------- ------- ---- ----- ------ ------ -----
+ 0 up 7.5M/230.6K aes256 sha1 no 567 1800 all
+
+If there is SNAT rules on eth1, need to add exclude rule
+
+.. code-block:: sh
+
+ # server side
+ set nat source rule 10 destination address '10.0.0.0/24'
+ set nat source rule 10 'exclude'
+ set nat source rule 10 outbound-interface 'eth1'
+ set nat source rule 10 source address '192.168.0.0/24'
+
+ # remote office 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 'eth1'
+ set nat source rule 10 source address '10.0.0.0/24'
+
+To allow traffic to pass through to clients, you need to add the following
+rules. (if you used the default configuration at the top of this page)
+
+.. code-block:: sh
+
+ # server side
+ set firewall name OUTSIDE-LOCAL rule 32 action 'accept'
+ set firewall name OUTSIDE-LOCAL rule 32 source address '10.0.0.0/24'
+
+ # remote office side
+ set firewall name OUTSIDE-LOCAL rule 32 action 'accept'
+ set firewall name OUTSIDE-LOCAL rule 32 source address '192.168.0.0/24'
+
+DMVPN
+-----
+
+**D** ynamic **M** ultipoint **V** irtual **P** rivate **N** etworking
+
+DMVPN is a dynamic VPN technology originally developed by Cisco. While their
+implementation was somewhat proprietary, the underlying technologies are
+actually standards based. The three technologies are:
+
+* **NHRP** - NBMA Next Hop Resolution Protocol RFC2332_
+* **mGRE** - Multipoint Generic Routing Encapsulation / mGRE RFC1702_
+* **IPSec** - IP Security (too many RFCs to list, but start with RFC4301_)
+
+NHRP provides the dynamic tunnel endpoint discovery mechanism (endpoint
+registration, and endpoint discovery/lookup), mGRE provides the tunnel
+encapsulation itself, and the IPSec protocols handle the key exchange, and
+crypto mechanism.
+
+In short, DMVPN provides the capability for creating a dynamic-mesh VPN
+network without having to pre-configure (static) all possible tunnel end-point
+peers.
+
+.. note:: DMVPN only automates the tunnel endpoint discovery and setup. A
+ complete solution also incorporates the use of a routing protocol. BGP is
+ particularly well suited for use with DMVPN.
+
+Baseline Configuration:
+
+**STEPS:**
+
+#. Create tunnel config (`interfaces tunnel`)
+#. Create nhrp (`protocols nhrp`)
+#. Create ipsec vpn (optional, but recommended for security) (`vpn ipsec`)
+
+The tunnel will be set to mGRE if for encapsulation `gre` is set, and no
+`remote-ip` is set. If the public ip is provided by DHCP the tunnel `local-ip`
+can be set to "0.0.0.0"
+
+.. figure:: _static/images/vpn_dmvpn_topology01.png
+ :scale: 40 %
+ :alt: Baseline DMVPN topology
+
+ Baseline DMVPN topology
+
+HUB Configuration
+^^^^^^^^^^^^^^^^^
+
+.. code-block:: sh
+
+ interfaces
+ tunnel <tunN> {
+ address <ipv4>
+ encapsulation gre
+ local-ip <public ip>
+ multicast enable
+ description <txt>
+ parameters {
+ ip {
+ <usual IP options>
+ }
+ }
+ }
+ }
+ protocols {
+ nhrp {
+ tunnel <tunN> {
+ cisco-authentication <key phrase>
+ holding-time <seconds>
+ multicast dynamic
+ redirect
+ }
+ }
+ }
+ vpn {
+ ipsec {
+ esp-group <text> {
+ lifetime <30-86400>
+ mode tunnel
+ pfs enable
+ proposal <1-65535> {
+ encryption aes256
+ hash sha1
+ }
+ proposal <1-65535> {
+ encryption 3des
+ hash md5
+ }
+ }
+ ike-group <text> {
+ key-exchange ikev1
+ lifetime <30-86400>
+ proposal <1-65535> {
+ encryption aes256
+ hash sha1
+ }
+ proposal <1-65535> {
+ encryption aes128
+ hash sha1
+ }
+ }
+ ipsec-interfaces {
+ interface <ethN>
+ }
+ profile <text> {
+ authentication {
+ mode pre-shared-secret
+ pre-shared-secret <key phrase>
+ }
+ bind {
+ tunnel <tunN>
+ }
+ esp-group <text>
+ ike-group <text>
+ }
+ }
+ }
+
+HUB Example Configuration:
+
+.. code-block:: sh
+
+ set interfaces ethernet eth0 address '1.1.1.1/30'
+ set interfaces ethernet eth1 address '192.168.1.1/24'
+ set system host-name 'HUB'
+
+ set interfaces tunnel tun0 address 10.0.0.1/24
+ set interfaces tunnel tun0 encapsulation gre
+ set interfaces tunnel tun0 local-ip 1.1.1.1
+ set interfaces tunnel tun0 multicast enable
+ set interfaces tunnel tun0 parameters ip key 1
+
+ set protocols nhrp tunnel tun0 cisco-authentication SECRET
+ set protocols nhrp tunnel tun0 holding-time 300
+ set protocols nhrp tunnel tun0 multicast dynamic
+ set protocols nhrp tunnel tun0 redirect
+
+ set vpn ipsec ipsec-interfaces interface eth0
+ set vpn ipsec ike-group IKE-HUB proposal 1
+ set vpn ipsec ike-group IKE-HUB proposal 1 encryption aes256
+ set vpn ipsec ike-group IKE-HUB proposal 1 hash sha1
+ set vpn ipsec ike-group IKE-HUB proposal 2 encryption aes128
+ set vpn ipsec ike-group IKE-HUB proposal 2 hash sha1
+ set vpn ipsec ike-group IKE-HUB lifetime 3600
+ set vpn ipsec esp-group ESP-HUB proposal 1 encryption aes256
+ set vpn ipsec esp-group ESP-HUB proposal 1 hash sha1
+ set vpn ipsec esp-group ESP-HUB proposal 2 encryption 3des
+ set vpn ipsec esp-group ESP-HUB proposal 2 hash md5
+ set vpn ipsec esp-group ESP-HUB lifetime 1800
+ set vpn ipsec esp-group ESP-HUB pfs dh-group2
+
+ set vpn ipsec profile NHRPVPN
+ set vpn ipsec profile NHRPVPN authentication mode pre-shared-secret
+ set vpn ipsec profile NHRPVPN authentication pre-shared-secret SECRET
+ set vpn ipsec profile NHRPVPN bind tunnel tun0
+ set vpn ipsec profile NHRPVPN esp-group ESP-HUB
+ set vpn ipsec profile NHRPVPN ike-group IKE-HUB
+
+ set protocols static route 0.0.0.0/0 next-hop 1.1.1.2
+ set protocols static route 192.168.2.0/24 next-hop 10.0.0.2
+ set protocols static route 192.168.3.0/24 next-hop 10.0.0.3
+
+SPOKE Configuration
+^^^^^^^^^^^^^^^^^^^
+
+SPOKE1 Configuration:
+
+.. code-block:: sh
+
+ interfaces
+ tunnel <tunN> {
+ address <ipv4>
+ encapsulation gre
+ local-ip <public ip>
+ multicast enable
+ description <txt>
+ parameters {
+ ip {
+ <usual IP options>
+ }
+ }
+ }
+ }
+ protocols {
+ nhrp {
+ tunnel <tunN> {
+ cisco-authentication <key phrase>
+ map <ipv4/net> {
+ nbma-address <ipv4>
+ register
+ }
+ holding-time <seconds>
+ multicast nhs
+ redirect
+ shortcut
+ }
+ }
+ }
+ vpn {
+ ipsec {
+ esp-group <text> {
+ lifetime <30-86400>
+ mode tunnel
+ pfs enable
+ proposal <1-65535> {
+ encryption aes256
+ hash sha1
+ }
+ proposal <1-65535> {
+ encryption 3des
+ hash md5
+ }
+ }
+ ike-group <text> {
+ key-exchange ikev1
+ lifetime <30-86400>
+ proposal <1-65535> {
+ encryption aes256
+ hash sha1
+ }
+ proposal <1-65535> {
+ encryption aes128
+ hash sha1
+ }
+ }
+ ipsec-interfaces {
+ interface <ethN>
+ }
+ profile <text> {
+ authentication {
+ mode pre-shared-secret
+ pre-shared-secret <key phrase>
+ }
+ bind {
+ tunnel <tunN>
+ }
+ esp-group <text>
+ ike-group <text>
+ }
+ }
+ }
+
+SPOKE1 Example Configuration
+
+.. code-block:: sh
+
+ set interfaces ethernet eth0 address 'dhcp'
+ set interfaces ethernet eth1 address '192.168.2.1/24'
+ set system host-name 'SPOKE1'
+
+ set interfaces tunnel tun0 address 10.0.0.2/24
+ set interfaces tunnel tun0 encapsulation gre
+ set interfaces tunnel tun0 local-ip 0.0.0.0
+ set interfaces tunnel tun0 multicast enable
+ set interfaces tunnel tun0 parameters ip key 1
+
+ set protocols nhrp tunnel tun0 cisco-authentication 'SECRET'
+ set protocols nhrp tunnel tun0 map 10.0.0.1/24 nbma-address 1.1.1.1
+ set protocols nhrp tunnel tun0 map 10.0.0.1/24 'register'
+ set protocols nhrp tunnel tun0 multicast 'nhs'
+ set protocols nhrp tunnel tun0 'redirect'
+ set protocols nhrp tunnel tun0 'shortcut'
+
+ set vpn ipsec ipsec-interfaces interface eth0
+ set vpn ipsec ike-group IKE-SPOKE proposal 1
+ set vpn ipsec ike-group IKE-SPOKE proposal 1 encryption aes256
+ set vpn ipsec ike-group IKE-SPOKE proposal 1 hash sha1
+ set vpn ipsec ike-group IKE-SPOKE proposal 2 encryption aes128
+ set vpn ipsec ike-group IKE-SPOKE proposal 2 hash sha1
+ set vpn ipsec ike-group IKE-SPOKE lifetime 3600
+ set vpn ipsec esp-group ESP-SPOKE proposal 1 encryption aes256
+ set vpn ipsec esp-group ESP-SPOKE proposal 1 hash sha1
+ set vpn ipsec esp-group ESP-SPOKE proposal 2 encryption 3des
+ set vpn ipsec esp-group ESP-SPOKE proposal 2 hash md5
+ set vpn ipsec esp-group ESP-SPOKE lifetime 1800
+ set vpn ipsec esp-group ESP-SPOKE pfs dh-group2
+
+ set vpn ipsec profile NHRPVPN
+ set vpn ipsec profile NHRPVPN authentication mode pre-shared-secret
+ set vpn ipsec profile NHRPVPN authentication pre-shared-secret SECRET
+ set vpn ipsec profile NHRPVPN bind tunnel tun0
+ set vpn ipsec profile NHRPVPN esp-group ESP-SPOKE
+ set vpn ipsec profile NHRPVPN ike-group IKE-SPOKE
+
+ set protocols static route 192.168.1.0/24 next-hop 10.0.0.1
+ set protocols static route 192.168.3.0/24 next-hop 10.0.0.3
+
+
+SPOKE2 Configuration
+
+.. code-block:: sh
+
+ interfaces
+ tunnel <tunN> {
+ address <ipv4>
+ encapsulation gre
+ local-ip <public ip>
+ multicast enable
+ description <txt>
+ parameters {
+ ip {
+ <usual IP options>
+ }
+ }
+ }
+ }
+ protocols {
+ nhrp {
+ tunnel <tunN> {
+ cisco-authentication <key phrase>
+ map <ipv4/net> {
+ nbma-address <ipv4>
+ register
+ }
+ holding-time <seconds>
+ multicast nhs
+ redirect
+ shortcut
+ }
+ }
+ }
+ vpn {
+ ipsec {
+ esp-group <text> {
+ lifetime <30-86400>
+ mode tunnel
+ pfs enable
+ proposal <1-65535> {
+ encryption aes256
+ hash sha1
+ }
+ proposal <1-65535> {
+ encryption 3des
+ hash md5
+ }
+ }
+ ike-group <text> {
+ key-exchange ikev1
+ lifetime <30-86400>
+ proposal <1-65535> {
+ encryption aes256
+ hash sha1
+ }
+ proposal <1-65535> {
+ encryption aes128
+ hash sha1
+ }
+ }
+ ipsec-interfaces {
+ interface <ethN>
+ }
+ profile <text> {
+ authentication {
+ mode pre-shared-secret
+ pre-shared-secret <key phrase>
+ }
+ bind {
+ tunnel <tunN>
+ }
+ esp-group <text>
+ ike-group <text>
+ }
+ }
+ }
+
+SPOKE2 Example Configuration
+
+.. code-block:: sh
+
+ set interfaces ethernet eth0 address 'dhcp'
+ set interfaces ethernet eth1 address '192.168.3.1/24'
+ set system host-name 'SPOKE2'
+
+ set interfaces tunnel tun0 address 10.0.0.3/24
+ set interfaces tunnel tun0 encapsulation gre
+ set interfaces tunnel tun0 local-ip 0.0.0.0
+ set interfaces tunnel tun0 multicast enable
+ set interfaces tunnel tun0 parameters ip key 1
+
+ set protocols nhrp tunnel tun0 cisco-authentication SECRET
+ set protocols nhrp tunnel tun0 map 10.0.0.1/24 nbma-address 1.1.1.1
+ set protocols nhrp tunnel tun0 map 10.0.0.1/24 register
+ set protocols nhrp tunnel tun0 multicast nhs
+ set protocols nhrp tunnel tun0 redirect
+ set protocols nhrp tunnel tun0 shortcut
+
+ set vpn ipsec ipsec-interfaces interface eth0
+ set vpn ipsec ike-group IKE-SPOKE proposal 1
+ set vpn ipsec ike-group IKE-SPOKE proposal 1 encryption aes256
+ set vpn ipsec ike-group IKE-SPOKE proposal 1 hash sha1
+ set vpn ipsec ike-group IKE-SPOKE proposal 2 encryption aes128
+ set vpn ipsec ike-group IKE-SPOKE proposal 2 hash sha1
+ set vpn ipsec ike-group IKE-SPOKE lifetime 3600
+ set vpn ipsec esp-group ESP-SPOKE proposal 1 encryption aes256
+ set vpn ipsec esp-group ESP-SPOKE proposal 1 hash sha1
+ set vpn ipsec esp-group ESP-SPOKE proposal 2 encryption 3des
+ set vpn ipsec esp-group ESP-SPOKE proposal 2 hash md5
+ set vpn ipsec esp-group ESP-SPOKE lifetime 1800
+ set vpn ipsec esp-group ESP-SPOKE pfs dh-group2
+
+ set vpn ipsec profile NHRPVPN
+ set vpn ipsec profile NHRPVPN authentication mode pre-shared-secret
+ set vpn ipsec profile NHRPVPN authentication pre-shared-secret SECRET
+ set vpn ipsec profile NHRPVPN bind tunnel tun0
+ set vpn ipsec profile NHRPVPN esp-group ESP-SPOKE
+ set vpn ipsec profile NHRPVPN ike-group IKE-SPOKE
+
+ set protocols static route 192.168.1.0/24 next-hop 10.0.0.1
+ set protocols static route 192.168.2.0/24 next-hop 10.0.0.2
+
+.. _`Google Public DNS`: https://developers.google.com/speed/public-dns
+.. _Quad9: https://quad9.net
+.. _CloudFlare: https://blog.cloudflare.com/announcing-1111
+.. _RADIUS: https://en.wikipedia.org/wiki/RADIUS
+.. _FreeRADIUS: https://freeradius.org
+.. _`Network Policy Server`: https://en.wikipedia.org/wiki/Network_Policy_Server
+.. _RFC2332: https://tools.ietf.org/html/rfc2332
+.. _RFC1702: https://tools.ietf.org/html/rfc1702
+.. _RFC4301: https://tools.ietf.org/html/rfc4301
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