IEEE 802.3, 802.3u, 802.3ab, IEEE 802.3x, IEEE 802.1q, TCP/IP, DHCP, ICMP, NAT, PPPoE, NTP, HTTP, HTTPS, DNS, IPSec, PPTP, L2TP, OpenVPN, SNMP, 1 Fixed Gigabit WAN Port, 1 Fixed Gigabit LAN Port, 3 Changeable Gigabit WAN/LAN Ports, Flash SPI 16MB, DRAM 128 MB, LED PWR, SYS, WAN, LAN, IPsec VPN Throughput 41.5 Mbps, VLAN 802.1Q VLAN, IPTV IGMP v2/v3 Proxy, 20 IPsec VPN Tunnels, LAN-to-LAN, Client-to-LAN, Main, Aggressive Negotiation Mode, DES, 3DES, AES128, AES192, AES256 Encryption Algorithm, IKEv1/v2*, MD5, SHA1 Authentication Algorithm, NAT Traversal (NAT-T), Dead Peer Detection (DPD), Perfect Forward Secrecy (PFS)