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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.
Using standards-based IPsec technology, Cisco IOS Easy VPN greatly simplifies VPN deployment with centralized VPN management across all Cisco VPN devices. It supports integration of a variety of remote devices within a single deployment and with a consistent policy and key management method, which simplifies remote side administration.