I am looking for some advice around TMG and a 10060 connection timeout error when accessing a web server over HTTP via a VPN tunnel.
I have seen posts around DNS, web caching , etc but no real resolution. Is this always a TMG issue as I can connect to another web page via the VPN tunnel?,
Just looking for some advice to look into the issue?
Thank you for the post.
Error code 10060 is a timeout error which usually means that ISA sent a SYN packet and did not get any reply. Please check if there is any other firewall in front of the ISA server or if there is the upstream firewall, it is
usually the one dropping the connection. Meanwhile, you may refer to the following articles to troubleshooting this error:
Nick Gu - MSFT
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