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List:       ms-wmtalk
Subject:    Re: WMT thru ISA Server
From:       Jim Harrison <jim () JALOJASH ! ORG>
Date:       2000-12-31 18:37:00
[Download RAW message or body]


This is a long-running issue for anyone using WMT across firewalls.  In
order to have full access to outside WM streaming for your ISA-protected
clients, you'll have to enable the WM packet filter / protocol rule.  This
enables:
1. Open TCP & UDP ports 1755 bidirectionally
2. Open UDP 1024-5000 inbound (for your clients behind ISA)
..and  allows MMS streaming to come through unabated.
The reason some sites work and others fail is that the working ones have
probably enabled HTTP streaming at the WM server.  This allows the stream to
be sent via TCP port 80 - normal HTTP, which you no doubt have opened.
Unfortunately, not everyone enables HTTP streaming at the WM server.

Jim

----- Original Message -----
From: "Eddie Wu" <eddie@INLABS.COM>
To: <WMTalk@DISCUSS.MICROSOFT.COM>
Sent: Sunday, December 31, 2000 09:53
Subject: WMT thru ISA Server


Hello and Happy New Year,

I've a question about WMT and ISA server. We have an ISA server in our
network as both firewall and proxy. Every computer access the internet thru
the server. I configured the ISA to allow Windows Media server and client
traffic and used "Secure" option in the "IP Packets Filter/Secure your ISA
server computer". The result is, the internal user can use ICQ, Exchange,
view Real Video, however, there are some (not all) WMT sites our internal
user behind the ISA server can't view. Anyone knows how to set the ISA
server for WMT? Thanks.

Eddie

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