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SNAT client now FW client- voice apps still don't work - 12.Jul.2001 5:13:00 AM

kdwoell

Posts: 3
Joined: 18.Jun.2001
From: arlington, va
Status: offline

I have an internal client behind ISA in dual FW/Proxy mode. Intially configured a client as SNAT. Never was able to use MS Messenger or Yahoo Net2Phone successfully. Tried all the built in Net2Phone protocols, and even opened up ports as Yahoo website calle for.

So I decided to install the FW client. I can still surf the web (did'nt change a thing in the browser settings), but none of the Voice over IP apps work. That must mean, the client is now truly a FW client, but that the ISA Firewall is still blocking some the required TCP and UDP ports. I guess?

My research shows that voice apps won't work behind a Proxy, so by installing the FW client software, does that take ISA Proxy out of the loop?

Post #: 1

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RE: SNAT client now FW client- voice apps still don't work - 14.Jul.2001 12:18:00 AM

tshinder

Posts: 47659
Joined: 10.Jan.2001
From: Texas
Status: offline

Hi KD,

Some voice apps work behind the proxy. All of our colloboration with Martin Grasdal during the writing of the book was done using NetMeeting for audio/video conferencing.

All Net2phone works fine for making calls through their PSTN gateway. I've used it several times for that. I've also used the MS IM'er's version of IP to PSTN voice app and that works well too.

However, I've never tested the computer to computer voice scenario, since you don't need it with the H.323 Gateway and NetMeeting.

HTH,
Tom

------------------
Tom Shinder
http://www.isaserver.org/shinder/

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(in reply to kdwoell)

Post #: 2

RE: SNAT client now FW client- voice apps still don't work - 21.Jul.2001 6:38:00 PM

tshinder

Posts: 47659
Joined: 10.Jan.2001
From: Texas
Status: offline

Hi KD,

Here is a helpful post from the mailing list:

for file transfers with the MSN-Messenger, you need scondary connections
on Ports 6891-6900 TCP inbound and outbound.
Also you must change the Firewall Client properties on the the ISA:
"Application Settings" new entry. APP: msmgs; Key:
NameResolutionForLocalHost; Value: P

->->->->->
Hi Tom,

yes, create Apps entry on ISA-Server - Clients - Application Settings
Apps: msmsgs
Key: NameResolutionForLocalHost
Value: P
and the secondary ports 6891-6900 TCP in/out are necessary for file
transfer. (Protocol definitions)

Christian
\\\\\\\\\\\\\\\\\\\\\\\\\
/////////////////////////

HTH,
Tom

------------------
Tom Shinder
http://www.isaserver.org/shinder/
Get It Here