Support: SSL-VPN (HTTPS),OpenVPN,IPsec,L2TP,MS-SSTP,L2TPv3,EtherIP; AES 256-bit RSA 4,096-bit encryption RADIUS, NT domain controller user authentication X.509 client authentication Supports Windows, Linux, Mac, Android, iPhone, iPad IPv4/IPv6 dual stack support VPN server runs on Windows, Linux, FreeBSD, Solaris and Mac OS x.