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+.. _vpn-openconnect:
+
+###########
+OpenConnect
+###########
+
+OpenConnect-compatible server feature is available from this release.
+Openconnect VPN supports SSL connection and offers full network access. SSL VPN
+network extension connects the end-user system to the corporate network with
+access controls based only on network layer information, such as destination IP
+address and port number. So, it provides safe communication for all types of
+device traffic across public networks and private networks, also encrypts the
+traffic with SSL protocol.
+
+The remote user will use the openconnect client to connect to the router and
+will receive an IP address from a VPN pool, allowing full access to the network.
+
+.. note:: All certificates should be stored on VyOS under /config/auth. If
+   certificates are not stored in the /config directory they will not be
+   migrated during a software update.
+
+*************
+Configuration
+*************
+
+SSL Certificates
+================
+
+We need to generate the certificate which authenticates users who attempt to
+access the network resource through the SSL VPN tunnels. The following command
+will create a self signed certificates and will be stored in the file path
+`/config/auth`.
+
+.. code-block:: none
+
+  openssl req -newkey rsa:4096 -new -nodes -x509 -days 3650 -keyout /config/auth/server.key -out /config/auth/server.crt
+  openssl req -new -x509 -key /config/auth/server.key -out /config/auth/ca.crt
+
+We can also create the certificates using Cerbort which is an easy-to-use client
+that fetches a certificate from Let's Encrypt an open certificate authority
+launched by the EFF, Mozilla, and others and deploys it to a web server.
+
+.. code-block:: none
+
+  sudo certbot certonly --standalone --preferred-challenges http -d <domain name>
+
+Server Configuration
+====================
+
+.. code-block:: none
+
+  set vpn openconnect authentication local-users username <user> password <pass>
+  set vpn openconnect authentication mode <local|radius>
+  set vpn opneconnect network-settings client-ip-settings subnet <subnet>
+  set vpn openconnect network-settings name-server <address>
+  set vpn openconnect network-settings name-server <address>
+  set vpn openconnect ssl ca-cert-file <file>
+  set vpn openconnect ssl cert-file <file>
+  set vpn openconnect ssl key-file <file>
+
+
+*******
+Example
+*******
+
+Use local user name "user4" with password "SecretPassword"
+Client IP addresses will be provided from pool 100.64.0.0/24
+The Gateway IP Address must be in one of the router´s interfaces.
+
+.. code-block:: none
+
+  set vpn openconnect authentication local-users username user4 password 'SecretPassword'
+  set vpn openconnect authentication mode 'local'
+  set vpn openconnect network-settings client-ip-settings subnet '100.64.0.0/24'
+  set vpn openconnect network-settings name-server '1.1.1.1'
+  set vpn openconnect network-settings name-server '8.8.8.8'
+  set vpn openconnect ssl ca-cert-file '/config/auth/fullchain.pem'
+  set vpn openconnect ssl cert-file '/config/auth/cert.pem'
+  set vpn openconnect ssl key-file '/config/auth/privkey.pem'
+
+
+************
+Verification
+************
+
+.. code-block:: none
+
+
+  vyos@RTR1:~$ show openconnect-server sessions
+
+  interface    username    ip            remote IP      RX        TX        state      uptime
+  -----------  ----------  ------------  -------------  --------  --------  ---------  --------
+  sslvpn0      user4       100.64.0.105  xx.xxx.49.253  127.3 KB  160.0 KB  connected  12m:28s
+
+.. note:: It is compatible with Cisco (R) AnyConnect (R) clients.