Become open source at Jan 4, 2014

SSL-VPN Tunneling on HTTPS

Ethernet-bridging (L2) and IP-routing (L3) over VPN

Embedded dynamic-DNS and NAT-traversal

6 major VPN protocols:

    OpenVPN

    IPsec

    L2TP

    MS-SSTP

    L2TP V3

    EtherIP

VPN over ICMP or DNS feature

https://www.softether.org/