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Archive for August 13th, 2013

A Little Netmon Goes a Long Way

Posted by William Diaz on August 13, 2013

You don’t necessarily need to be a network guru to use Microsoft Network Monitor. I have used it more than a few times to troubleshoot client side applications that fail to connect to external resources for whatever reason. For example, a user unable to logon to a some external server, receiving the follow error: “The remote server returned an error: (502) Bade Gateway

7-25-2013 6-16-51 PM

I tried the site myself with Netmon capturing a trace and saw the remote server was trying to establish a secure connection through a port other than common 443:


And here where printing from a remote app was failing to pass through our TMG proxy:


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