Security continues to be the biggest concern for IT managers and, in turn, design engineers developing firewall systems. With more viruses popping up and hackers attacking more often, corporations are ...

Earlier this month, the National Infrastructure Security Coordination Centre in the U.K. advised that implementations of the H.323 protocol are vulnerable to denial-of-service attacks and could even ...

“Mature” is the word often used to describe the H.323 protocol for real-time IP communications. Since the ITU's ratification of H.323 Version 2 in 1998, the protocol has found its way, by some ...

So far in this series I have described two telephony protocols (SIP and MGCP) that feature prominently on the CCIE Voice and CCVP exam blueprints. In this blog entry, I am going to describe another, H ...