North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: How to Blocking VoIP ( H.323) ?
One might also suggest that explicit "denials", as opposed to explicit "permits", as an access-control policy is fundamentally flawed security approach in the first place.... My $.02, - ferg -- "Scott Morris" <[email protected]> wrote: Tcp/1719 is part of the H323 Gatekeeper default ports (which can be changed) Tcp/1720 is the H.225 call setup port, and I haven't heard of this being a configurable port. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Joe Shen Sent: Thursday, November 11, 2004 6:40 AM To: NANGO Subject: How to Blocking VoIP ( H.323) ? Hi, How could it be done to block VoIP at access router? I've thought about using ACL to block UDP port 1719,but this could be overcome by modifying protocol port number. regards Joe -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet [email protected] or [email protected]
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