StarTech.com BR4100DC, Blue StarTech.com BR4100DC. Number of users: 253 user(s). Supported protocols: TCP/IP, UDP, ICMP, PPPoE, PPTP, NAT/PAT, DHCP, RIP1/2, PAP/CHAP, MS-CHAP.. Firewall security: Network address translation (NAT) firewall. Certification: FCC class B, CE Mark & C-Tick. Product colour: Blue