H.323 Security Issues

Hi all,

I am studying the security issues related to H.323 proxy. I need to find out more about the security issues posed by a H.323 proxy. I believe that the H.323 proxies such as those developed by TIS, Checkpoint and Cisco, although permitting H.323 traffic, are not considered very secure. What are the possible security hazards one must be aware of? Thanks.

Avikal Jain Center for Development of Advanced Computing, Pune 411007, India. e-mail: avikal@usa.net