Our firewall runs pfSense, which I know does not have SIP ALG enabled, as this is something that you have to download as an additional package if you want to use it.

Traditional perimeter security methods such as firewalls and IPS can interfere with VoIP call operation and performance, which can cause many organizations to bypass or break through firewalls to make ...

Because of VoIP, firewalls may never be the same. New research shows that organizations underestimate the demands that enterprise VoIP security places on existing firewalls, and that those demands are ...

The Interactive Connectivity Establishment (ICE) draft, developed by the IETF’s MMUSIC working group, provides a framework to unify the various NAT traversal techniques. This enables SIP-based VoIP ...

VoIP (Voice over IP) represents an easily proven, cost-saving technology that many beleaguered IT executives are eager to exploit. Implementation, however, throws up hurdles, not the least of which is ...

For all the technology behind Voice over IP (VoIP), you'd expect that it would work on every network, but this unfortunately isn't the case. Network Address Translation (NAT) is a common practice used ...

The Internet is a scary place. Criminals on the Internet have the ability to hide behind their computers, or even other peoples computers, while they attempt to break into your computer to steal ...