nanog mailing list archives
RE: How to Blocking VoIP ( H.323) ?
From: "Scott Morris" <swm () emanon com>
Date: Thu, 11 Nov 2004 07:31:40 -0500
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. HTH, Scott Morris, MCSE, CCDP, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIP, CCNA-WAN Switching, CCSP, Cable Communications Specialist, IP Telephony Support Specialist, IP Telephony Design Specialist, CISSP CCSI #21903 swm () emanon com -----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] 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 __________________________________________________ Do You Yahoo!? Log on to Messenger with your mobile phone! http://sg.messenger.yahoo.com
Current thread:
- How to Blocking VoIP ( H.323) ? Joe Shen (Nov 11)
- RE: How to Blocking VoIP ( H.323) ? Scott Morris (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Joel Jaeggli (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Irwin Lazar (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Christopher L. Morrow (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Alexei Roudnev (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Robert Mathews (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Christopher L. Morrow (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Robert Mathews (Nov 11)
- Re: How to Blocking VoIP ( H.323) ? Joe Shen (Nov 12)
- Re: How to Blocking VoIP ( H.323) ? Alexei Roudnev (Nov 12)
- Re: How to Blocking VoIP ( H.323) ? Christopher L. Morrow (Nov 12)
- Re: How to Blocking VoIP ( H.323) ? Irwin Lazar (Nov 11)