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SSL Server Publishing Fails

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SSL Server Publishing Fails - 8.May2002 7:43:00 AM   


Posts: 9
Joined: 15.Mar.2002
Status: offline
We have a situation where we are unable to publish an SSL
server on our internal network. Details as follows:

- ISA Server is on a different box to IIS
- ISA Server SP1 is applied
- HTTP publishing is working
- SSL access to the web server works when not going
through ISA (ie: SSL on the IIS box is fine)
- Netstat shows ISA is listening on port 443
- Packet filters show ALLOW logs whenever an attempt to
access an SSL site is made
- IIS logs always show port 80 requests, but SSL requests
are never passed from ISA to IIS

We have checked that SSL Web publishing is disabled as we
are using a Server Publishing Rule to publish SSL.

So in a nutshell, SSL requests make it to ISA which then
does nothing with them, but HTTP requests are passed
through okay.

Thoughts appreciated.
Post #: 1
RE: SSL Server Publishing Fails - 8.May2002 2:12:00 PM   


Posts: 15
Joined: 7.May2002
Status: offline
Hi tymbow

The first thing that I'd check is whether you can connect to your web server from a client on the internal network using an HTTPS request to confirm that SSL is functioning. If not, ISA may not be your problem and I'd start thinking about the IIS box.

Second thing is to ensure you have all the bases covered according to


The next thing you could think about is a network trace:

1. Install Network Monitor on the IIS box and the ISA box.

2. Make sure that you've got it configured to listen to the correct network interface (Capture menu -> Networks -> select the correct MAC address) and start a trace.

3. Hit the ISA Server with an SSL request from an external client and wait for the request to fail in the browser.

4. Stop the trace on the ISA box and the IIS box.

5. Examine the network traffic.

This will be a little difficult because the request will be encrypted but if you filter the trace so that it only displays traffic between the two servers, you should be able to see if there are requests sent from the ISA box to the IIS box destined for port 443.

This will at least tell you whether ISA is passing the request or not and whether IIS is responding if the packet gets there.

Your last option is to use Web Publishing ... refer to:


Hope that helps


(in reply to tymbow)
Post #: 2

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