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www.google.com is broken through ISA as of this week

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www.google.com is broken through ISA as of this week - 18.Mar.2010 11:15:24 AM   
RAJP

 

Posts: 53
Joined: 11.Mar.2006
Status: offline
Starting this week www.google.com comes up with an error on the home page and a blank home page most of the time. It appears to be related to some script change they made BUT it's only broken if we access it through ISA 2006 SP2 Enterprise. If we do not go through ISA the page appears fine.

Line 6
Char 1
Error: document.f.q is null or not an object

This is a single interface install of ISA. The ISA log shows this:





Failed Connection Attempt
ISA01 3/18/2010 11:12:11 AM

Log type: Web Proxy (Forward)

Status: 10054 An existing connection was forcibly closed by the remote host.

Rule: Allowed Internet

Source: Internal (n.n.n.n)

Destination: Internal (74.125.95.147:80)

Request: GET http://www.google.com/

Filter information: Req ID: 108cd756; Compression: client=No, server=No, compress rate=0% decompress rate=0%

Protocol: http

User: <domain\username>



 Additional information

Client agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; InfoPath.1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Object source: Internet (Source is the Internet. Object was added to the cache.)
Cache info: 0x61220005 (Request should not be served from the cache. Request includes one of these headers: CACHE-CONTROL:NO-CACHE or PRAGMA:NO-CACHE. Response includes the CACHE-CONTROL: PRIVATE header. Response includes the CACHE-CONTROL: MAX-AGE or S-MAXAGE header. Response includes the EXPIRES header. Response includes the TRANSFER-ENCODING header. Response should not be cached.)
Processing time: 94 ms
MIME type: text/html; charset=UTF-8

Any thoughts would be appreciated.
Post #: 1
RE: www.google.com is broken through ISA as of this week - 10.Apr.2010 4:59:22 PM   
RAJP

 

Posts: 53
Joined: 11.Mar.2006
Status: offline
This turned out to be a signature issue with our IPS. ISA somehow modifies the traffic, which was a bit of a surprise to me, and it tripped the IPS signature. If we didn't go through ISA the signature was fine. Other people reported it to the IPS vendor and they modified their signature somehow.

Ray

(in reply to RAJP)
Post #: 2

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