Cisco VPN

Cisco SSL AnyConnect VPN allows remote users to access enterprise networks from anywhere on the Internet through an SSL VPN gateway using a web browser. During the establishment of the SSL VPN with the gateway, the client downloads and installs the AnyConnect VPN client from VPN gateway.

Cisco ASA 5500-X products support SSL AnyConnect VPN.

The Linux client implementation is openconnect. There is also a server implementation called ocserv.