I want to use NTLM proxy authentication in Outlook 2003 when using RPC over HTTPS and not use "Basic" authentication. Basic always requires user & password credentials, and NTLM does not. However, NTLM authentication will fail unless the firewall allows traffic to passthrough directly to IIS and does not add any VIA: pragma to the http headers (such as ISA Server 2004). http://technet.microsoft.com/en-us/library/aa998943.aspx.

But, I don't have ISA Server 2004. Can regular old Windows Firewall be configured to just passthru traffic without modification so that IIS will trust the NTLM credentials provided by Outlook via RPC over HTTPS just like ISA 2004 does?

Karl

foose 7/11/2007 2:04:55 PM

Hello,
when you say: "You can also use Outlook 2003's encrypted RPC over HTTP functionality" you mean what i can configure the communication between ISA Server and the RCP Proxy server whit a encrypted RPC over HTTP?

Second.

i Have the RCP Proxy and the Exchange over same machine. how i have to configure the ports in the registry key HLM\\Software\\microsoft\\RPC\\RPCProxy\\ValidPorts? (my exchange server is mde04 and the DC and GC is
if is true, how i can do it?
mde01)



thanks a lot.

Carlos Mario Álvarez 2/19/2004 9:27:52 AM