Messagelabs proxy protocol blocked by web intelligence

[goldie]

Hi guys,

I am having problems getting 'client site proxy' for ISA server 2006 to work

Client site proxy is an ISA server add in which points all proxy traffic upstream to a messagelabs proxy server.

It does work for http requests but for some reason smart defence is blocking https requests with the following errors:

WSE0020001 illegal header format detected: Illegal start line in request

and

message_info: Retransmitted data does not match original data

it seems to be something in web intelligence that is blocking it. I have tried disabling all features relating to http format etc but to no avail

Does anybody have any ideas?!

Many thanks

Richard

[melipla]

Originally Posted by goldie

WSE0020001 illegal header format detected: Illegal start line in request

I've found the following SMDF checks to cause the WSE0020001 error.

Web Int -> HTTP Protocol Inspection -> all checkboxes
Web Int -> Application Layer -> All checks
App Int -> Peer to Peer -> all sub items that have "Block Masquerading over HTTP protocol"

Its unfortunate that the header check is so poorly written, it essentially makes these SMDF checks unusable.