SPI Firewall - The stateful packet inspection (SPI) and packet filtering firewall assures that your LAN stays private, secured and protected from malicious attacks via the Internet.
Broadband router and NAT - The router in the IX67 connects your PC and other networked equipment to the Internet. Your computers and network units on the inside can be assigned public IP addresses or use NAT addresses.
Support for SIP - SIP is the Internet standard for live person-to-person communication, that will create the next significant expansion of Internet usage after email and web surfing. IP telephony or VoIP is one usage of SIP. SIP does not traverse conventional firewalls and NAT routers! The IX67 has a built-in SIP proxy and registrar that dynamically controls the firewall and NAT for full SIP support.