VoIP and SIP Firewall

inGate

SIP (Session Intiation Protocol) is the signalling protocol for presence, messaging, VoIP and video conferencing that is becoming for person-to-person IP communication what HTTP is for the Web

SIP allows users of different service providers to communicate with each other. As more and more businesses use these applications, service providers are offering SIP trunks to connect LAN's to the outside world via Internet and/or dedicated, managed IP lines

A SIP-capable Session Border Controller (firewall) is required to manage all incoming and outgoing SIP traffic securely. Authorised traffic based on SIP needs to pass through the firewall in a controlled manner, reaching SIP units inside and outside the LAN

inGate firewalls come in a range of sizes to meet the security needs of SME's to large enterprises. They  have support for NAT and PAT, as well as for TLS and SRTP to encrypt both SIP signalling and media, thus eliminating the security issue most commonly associated with using enterprise VoIP