... , Fast Ethernet Network / Transport Protocol TCP/IP, PPTP, UDP/IP, L2TP, ICMP/IP, IPSec, ARP, DHCP, DNS Remote Management Protocol HTTP, HTTPS ... , 256-bit AES Features ARP support, VLAN support, DiffServ support, VPN passthrough, SNTP support, Quality of Service (QoS), DHCP server, port ...