Openconnect VPN Server virtual private network servers

Openconnect VPN server for short Ocserv, is a GNU server that implements the AnyConnect SSL VPN protocol, compatible with Openconnect VPN clients. The goal is to become a compact, secure, and configurable VPN server that relies on similar TLS1.2 standard protocols and TLS datagrams. The AnyConnect SSL VPN protocol is the closest protocol to meet this standard.

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VPN users can authenticate by password, identity authentication, or any combination of methods. Authenticated users will be assigned an unprivileged worker process and get network devices (tun) and IP from the configured address pool.

Ocserv Features:

Password Authentication (using Pam or password files) is supported by http://www.aliyun.com/zixun/aggregation/29830.html ">https and authentication."
Use TLS 1.2 and datagram TLS to support VPN channels for TCP and UDP.
Support IPV6 and IPV4.
Isolate each client into a separate process with a single network device and IP.
Authentication process and work process between privileged separation.
Supports TCP encapsulation (LIBWRAP).
Register VPN exists utmp and wtmp files.
Supports persistent information storage, allowing seamless server reboot.
The server key is stored in the TPM Hardware Security Module (HSM), which supports smart cards.
Compression is not supported temporarily.

Download Address: http://www.infradead.org/ocserv/download.html