... -performance Support multiple WAN access methods, including static IP, DHCP, L2TP, PPTP, PPPOE, 4G. LTE/ 3G/HSPA+ Support double link backup ... / WCDMA and WAN(PPPOE, ADSL) (optional) Support VPN client(PPTP, L2TP, OPENVPN, IPSEC and GRE)(only for VPN version) Support VPN ... server(PPTP, L2TP, OPENVPN, IPSEC and GRE)(only for VPN version) Support local ...