North American Network Operators Group
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Re: How to Blocking VoIP ( H.323) ?

  • From: Valdis.Kletnieks
  • Date: Thu Nov 11 13:24:17 2004 
On Thu, 11 Nov 2004 19:40:29 +0800, Joe Shen said:

> How could it be done to block VoIP at access router?

What business issue/problem are you trying to address by
blocking VoIP?  Since there's so many different things out
there (H.323, Skype, the various IM software), a "proper"
solution probably depends on what you're actually trying
to accomplish.  Consider:

1) Your problem is a wonky broken H.323 that dies when it
gets a connection from outside.

2) Your problem is "corporate insider uses VoIP to call a
competitor and leak trade secrets".

3) Your problem is "VoIP users bypassing billing for telephone calls".

All three will require different solutions, and there's probably
other scenarios as well.....

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