Re: Messenger Audio/Video with ISA 2004

Edward,
Thanks for the update. Obviously I and I think many others would like you
guys to get the corrected so Windows Messenger works with ISA. Until them it
back to Net Meeting.

Bernie

"Edward Tian" <v-edtian@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:%23appuDMmFHA.3672@xxxxxxxxxxxxxxxxxxxxxxxx
> Dear Bernie:
> One supplument: By following the steps in my previous reply, Audio/Video
> function in MSN6.2 will work.(If external user initiate the request) And
> we
> still do not have a perfect solution on ISA2004.
>
> I do understand your concerns and frustration on this solution.
> Technically, this is because of MSN Messenger 6.X's design instead of ISA
> server. Any NAT firewall without strong SIP support will experience this
> issue. MSN Messenger 6.X uses SIP for audio conversation. This protocol
> needs to report the IP address back to the SIP server and the server will
> provide this information to another client to allow it to initiate the
> connection. As this client is behind the ISA server (NAT) and using a
> private IP, the external client will not be able to connect.
>
> If this needs to be supported through the firewall, the firewall should
> have an SIP filter to parse these SIP traffics through the firewall and
> change the content. Therefore, the external client can know the actual IP
> it need to connect to and ISA can open that port when the external client
> connects. Currently, if you would like to initiate an Audio conversation,
> please let the external client to do this. You can send an instant message
> to the external client to ask him/her to initiate.
>
> I appreciate your understanding and patience.
> Please do let me know if you have any concerns. I look forward to hearing
> from you. Have a nice day! :)
>
> Best Regards
> Edward Tian(MSFT)
> Microsoft CSS Online Newsgroup Support
>
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> --------------------
> | From: "Bernie Hunt" <bhunt@xxxxxxxxxxxxx>
> | Subject: Messenger Audio/Video with ISA 2004
> | Date: Tue, 2 Aug 2005 00:40:34 -0400
> | Lines: 10
> | X-Priority: 3
> | X-MSMail-Priority: Normal
> | X-Newsreader: Microsoft Outlook Express 6.00.2900.2527
> | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527
> | X-RFC2646: Format=Flowed; Original
> | Message-ID: <u#pk1wxlFHA.3144@xxxxxxxxxxxxxxxxxxxx>
> | Newsgroups: microsoft.public.windows.server.sbs
> | NNTP-Posting-Host: ool-18bb1d58.dyn.optonline.net 24.187.29.88
> | Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
> | Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.server.sbs:140654
> | X-Tomcat-NG: microsoft.public.windows.server.sbs
> |
> | Does audio and video transmission in Windows Messenger work with ISA
> 2004? I
> | have a client who wants simple video calling and Net Meeting is winding
> | down. I'd rather start them on Windows Messenger, but they are using ISA
> and
> | ISA 2000 won't pass the data for Messenger. Does this work now or is it
> SIP
> | still not supported by ISA?
> |
> | Thanks,
> | Bernie
> |
> |
> |
>


.

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