[26709] in resnet
Firewall drops video conferencing packets
daemon@ATHENA.MIT.EDU (Christopher Hickernell)
Tue Sep 6 10:10:18 2011
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Date: Tue, 6 Sep 2011 14:04:14 +0000
Reply-To: Resnet Forum <RESNET-L@listserv.nd.edu>
From: Christopher Hickernell <chickernell@clarion.edu>
To: RESNET-L@listserv.nd.edu
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Has anyone else experienced a problem with video conferencing traffic cross=
ing the firewall? We have various models of Polycom units (HDX 8000 HD, HD=
X 9004, VS4000) that have trouble when they have to cross our Cisco ASA to =
connect to another unit. A connection is always established, but sometimes=
video and audio do not work, sometimes content cannot be sent, etc.
Monitoring the firewall logs I observed this error:
Deny IP from Montgomery-416.itv.clarion.edu to Still-111, IP options: "Rout=
er Alert"
Christopher Hickernell, CCNA, MCSE
Network Support Specialist, ResNet Manager
Clarion University of Pennsylvania
Center for Computing Services
G-13 Still Hall, Clarion, PA 16214
chickernell@clarion.edu | 814.393.2218
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<p class=3D"MsoNormal">Has anyone else experienced a problem with video con=
ferencing traffic crossing the firewall? We have various models of Po=
lycom units (HDX 8000 HD, HDX 9004, VS4000) that have trouble when they hav=
e to cross our Cisco ASA to connect to
another unit. A connection is always established, but sometimes vide=
o and audio do not work, sometimes content cannot be sent, etc.<o:p></o:p><=
/p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Monitoring the firewall logs I observed this error:<=
o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Deny IP from Montgomery-416.itv.clarion.edu to Still=
-111, IP options: "Router Alert"<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal"><b><o:p> </o:p></b></p>
<p class=3D"MsoNormal"><b>Christopher</b> Hickernell, CCNA, MCSE<o:p></o:p>=
</p>
<p class=3D"MsoNormal"><i>Network Support Specialist, ResNet Manager<o:p></=
o:p></i></p>
<p class=3D"MsoNormal">Clarion University of Pennsylvania<i><o:p></o:p></i>=
</p>
<p class=3D"MsoNormal">Center for Computing Services<i><o:p></o:p></i></p>
<p class=3D"MsoNormal">G-13 Still Hall, Clarion, PA 16214<o:p></o:p></p>
<p class=3D"MsoNormal">chickernell@clarion.edu | 814.393.2218<o:p></o:p></p=
>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
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