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502 Proxy Error - only with google search engine

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502 Proxy Error - only with google search engine - 19.Nov.2008 10:22:12 PM

ashabc

Posts: 7
Joined: 16.Feb.2008
Status: offline

I have starge problem with ISA 2006 SP1.
All access rule works fine, people can browse all sites except when the try to sear from google (either via google tool bar or via google web site), they get 502 proxy error.

I have rtied to capture traffic and see the following:

from client request goes as

GET /search?sourceid=navclient&hl=en-GB&ie=UTF-8&rlz=1T4DBAU_en-GBAU293&q=iibit&safe=active HTTP/1.1\r\n

response from ISA

HTTP/1.1 502 Proxy Error ( The Uniform Resource Locator (URL) does not use a recognized protocol. Either the protocol is not supported or the request was not typed correctly. Confirm that a valid protocol is in use (for example, HTTP for a

If I expand the packet in the sniffer further I can see checksum error?

I caanot assume that its a problem with network as users can go yo any we site without any problem. Even I have tried installing yahoo tool bar (searc engine) and its works fine. Only problem is with google tool bar or search engine. Users however can go to google site without any problem

I have seen few posts here trying to put an exception rule - I don't think that is a solution, its only a work around.

Post #: 1

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RE: 502 Proxy Error - only with google search engine - 8.Dec.2008 2:31:08 PM

mbargers

Posts: 1
Joined: 8.Dec.2008
Status: offline

I just ran into the same problem (Google seemingly redirecting my search results). Turns out it was a virus (rootkit.agent) and had to do with a phony sysaudio.sys file.

(in reply to ashabc)

Post #: 2