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12202 +403 error on HTTP request across site to site VPN

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12202 +403 error on HTTP request across site to site VPN - 22.Jan.2008 10:09:07 AM

themolk

Posts: 1
Joined: 22.Jan.2008
Status: offline

Gang,

This is messy, so apologies for the brain dump. Also apologies if I've posted and this is resolved/addressed anywhere else. I'm still looking...

We have a PPTP VPN from remote site to local site using ISA 2004. Remote site has a number of internal web pages that we cannot access from local site as of now (but could recently - but no one can pinpoint when or changes that would have contributed... of course).

When we try to access remote site HTTP we get and ISA error 403 Forbidden with and additional error message 12202. When monitoring/logging the request attempt it shows no specific rule or issue (we have an allow all networks to/from the remote site for the local site as early rules in the stack) that would stop it. It just shows that it stops. All other traffic (DNS, AD updates, RDP requests, etc) is allowed through successfully.

The kicker? The error we get references our local ISA server but throws the time & date of the REMOTE site ISA server (it's in a different time zone). We can access all the HTTP requests from the ISA server locally itself, just not internal to it.

I have recreated the access rules.
I have double checked and removed/readded the networks associate with the VPN.
I am fresh outta ideas, and throw myself at the mercy of the forum. All questions/assistance greatfully received...