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 ...

The question of session border controller (SBC) or firewall is one that many IT managers find annoying. Why? First and foremost, isn't the new era of communications supposed to be better, faster, ...

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 ...

“Today, every e-mail is scoured and scanned in the enterprise,” notes Mark Collier, CEO of SecureLogix. “The same will be true of VoIP.” But to get there you’ll need a sophisticated firewall that ...

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 ...

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.

The firewall has 5060 and 10000-20000 open to the SIP provider (voip.ms), and a static NAT to the FreePBX server but we are getting some set of calls with no audio on either end. Anyone have any ideas ...

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 ...