... , Symbian, and BlackBerry operating systems.Full VPN support> The SVN5800 series secure access gateways support SSL, IPSec, GRE, L2TP, and MPLS VPN types.Secure AccessDiverse authentication ... Web, Client/Server application program, and multimedia resources, in IPv4 or IPv6VPN typesSSL VPN, IPSec VPN, GRE VPN, L2TP VPN, MPLS VPNUser authenticationSupports authentication methods ...