Re: Publishing RPC over HTTPS for Outlook / Exchange 2003 with ISA 2004
From: Dave Watkins (dwatkins_at_NOSPAM.insite.co.nz)
Date: 02/27/05
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Date: Mon, 28 Feb 2005 09:07:10 +1300
Hi Ian
Thanks for the reply,
Unfortunatly this machine is behind another firewall as well as a NAT
device in front of that firewall, so I would have to forward a lot of
ports on both devices (to make it worse neither device has the ability
to forward multiple ports from one rule). Also we only have Outlook 2003
installed here so support for older clients isn't required
Dave
Ian Moran wrote:
> Dave,
>
> Why not simply Publish Exchange using the RPC filter ? This allows all
> versions of Outlook to connect securely to Exchange - not just Outlook
> 2003 as with RPC over HTTP.
>
> Ian
>
> Dave Watkins wrote:
>
>> Hi
>>
>> I've installed ISA 2004 on 2003 Server (Standard) and am trying to
>> setup RPC over HTTPS through the ISA server. My configuration is as
>> follows, one Exchange 2003 server with RPC proxy service loaded (no
>> FE/BE config) and a unihomed ISA 2004 server currently on the same
>> network as the exchange server but it will be moved to the DMZ once I
>> get this working. Connecting from the client to the exchange server
>> directly using HTTPS is successfull, but if I change the hosts file to
>> point the client to the ISA server it fails to connect.
>>
>> It should also be noted that OWA works fine through the ISA server
>> using the same listener
>>
>> I've setup the listener and rule as described here
>>
>> http://www.microsoft.com/technet/prodtechnol/isa/2004/plan/exchage2003.mspx
>>
>>
>> and also have a whitepaper called
>>
>> ISA2004SE_exchangekit-Rev 1 05.doc
>>
>> that has more detail but doesn' shed any light on my problem
>>
>> I've imported the certificates and everything looks like it should work
>>
>> However when I try to connect with Outlook is times out and I get the
>> following error in the log file
>>
>> 192.168.x.x anonymous MSRPC N 2/21/2005 2:23:26
>> W3ReverseProxy ISATEST - owa.insite.co.nz 192.168.x.x
>> 443 21020 290 2155 https TCP RPC_IN_DATA
>> http://owa.insite.co.nz:443/rpc/rpcproxy.dll?owa.insite.co.nz:6002
>> Inet 10060 OWA/RPC SSL Rule - Internal - 0xa40
>> Failed
>>
>> And the corresponding error when doing a live logging query reports
>> "Failed Connection Attempt"
>>
>> Any help greatly appreciated
>> Thanks
>> Dave
>>
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