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SecureNAT, RPC over HTTP, Oubound - 2.May2007 2:17:33 PM

sgirard

Posts: 3
Joined: 2.May2007
Status: offline

Hi, I've been trying to troubleshoot this issue for quite a while now, have read a lot of articles and posts on this website and others, and just can't figure it out...

So, I have a need to run an XPSP2 system as a SecureNAT client here. Most of our systems run the firewall client.

We use RPC over HTTP for Outlook2k3 to access a hosted Exchange service outside the network.

I have been unable to get a SecureNAT client to connect successfully to the RPC Proxy for our hosted Exchange with Outlook 2k3 (OWA works fine on this and other SecureNAT systems, like Macs). If I start Outlook with /rpcdiag I just see status "connecting" pretty much forever. I can put the same system on a separate network (i.e., w/ no ISA) and shutoff the firewall client and RPC over HTTP works like a charm.

Does anyone run a setup like this and if so have you run into similar issues?

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RE: SecureNAT, RPC over HTTP, Oubound - 2.May2007 2:27:45 PM

sgirard

Posts: 3
Joined: 2.May2007
Status: offline

One other thing I forgot to mention... I can connect to the hosted Exchange server as a firewall client, then disable the firewall client, and use RPC over HTTP as a SecureNAT client until I close Outlook and need to reconnect. It is only the initial connection/authentication that doesn't seem to work.

(in reply to sgirard)

Post #: 2

RE: SecureNAT, RPC over HTTP, Oubound - 3.May2007 11:42:24 AM

sgirard

Posts: 3
Joined: 2.May2007
Status: offline

At the risk on engaging in a monologue here... it seems I am able to remain connected as a SecureNAT client sending/receiving mail after initiall connecting as a firewall client for an indeterminate amount of time (I think on the order of 1 or 2 hours) until Outlook wants to reauthenticate or something, at which poing I have to close Outlook, reenable the firewall client, and reconnect to Exchange.

(in reply to sgirard)

Post #: 3