 |
 |
> From: "STeve Andre'" <[log in to unmask]> > Reply-To: [log in to unmask] > Date: Thu, 3 Jun 2004 15:02:59 +0000 > To: [log in to unmask] > Subject: Re: [MSUNAG] Videoconference Problems > > On Thursday 03 June 2004 18:55, Kevin Carr wrote: >> In the words of Emily Litella .... Never mind. >> >> The problem with the test I ran with the user in New Mexico (Los Alamos >> Natl. Lab) turned out to be at his end; the network folks had recently >> blocked all outbound UDP. (H.323 conferencing uses quite a few ports >> actually, both static and dynamically assigned, which makes >> videoconferencing across a firewall a real nightmare.) Every other test I >> have ran has worked as well. >> >> I'm still not positive what the problem with the user in Germany was but I >> doubt it was our equipment or network. >> >> Kevin M. Carr > > Kevin, if you can find out how they do run h.323 across a firewall, would > you share it here? Looking at h.323 scares me, from a firewall viewpoint. > If I knew how others tackled that, I'd be less nervous about one of my > people asking for it. ;-) > > Thanks, > > STeve Andre' > Political Science > It scares me too. I don't know the details of how they worked it out but if I understood correctly they went around the firewall (via an H.323 bridge) instead of going through the firewall. I have very little knowledge, and even less experience, on dealing with H.323 firewall issues, but here is a URL that may get you started: http://www.teamsolutions.co.uk/tsfirewall.html That also has a nice list of all the ports used by H.323. Kevin M. Carr ************************** Systems Administrator Genomics Technology Support Facility 202-D Biochemistry Bldg. Michigan State University East Lansing, MI 48824 Ph: (517) 353-6794 Fax:(517) 353-8638 **************************