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diff --git a/docs/vpn/l2tp_ipsec.rst b/docs/vpn/l2tp_ipsec.rst deleted file mode 100644 index 6f80fe35..00000000 --- a/docs/vpn/l2tp_ipsec.rst +++ /dev/null @@ -1,132 +0,0 @@ -.. _l2tp_ipsec: - -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 `radius server 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 -********************* - -If you are using e.g. OSPF as IGP always the nearest interface facing the RADIUS -server is used. With VyOS 1.2 you can bind all outgoing RADIUS requests to a -single source IP e.g. the loopback interface. - -.. code-block:: sh - - set vpn l2tp remote-access authentication radius source-address 3.3.3.3 - -Above command will use `3.3.3.3` as source IPv4 address for all RADIUS queries -on this NAS. - - -.. _`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
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