On Wed, 11 Feb 2009, Tony Berth wrote:
I just realised that my graph wasn't readable so I'll try here to re-draw
it:
-------------
client [a1]
-------------
|
|
-------------
Firewall
Proxy:port
[a2]
------------
|
|
(internet)
|
|
-----------------
remote server
with static IP
[a3]
----------------
Hope that this one will help to draw some attention from the list.
Thanks
Tony
-------------------------------------------------------------------------------------------
Hi Diana,
The 'a2' is rather a logical entity. Actually there are 2 machines. One
blocking all direct traffic to the Internet and the other is a proxy which
address is included in the 'a1's' browser in order to be able to access the
Internet!
Hope I did answer your question!
Thanks Tony
Tony
First, I put on my corporate network security hat on. If you're trying to
get around corporate policies you're setting yourself up for other
problem if they catch you. We find you doing this where I work and ... .
Second my helpful reply. :-)
Ok, so you don't know the specifics of the proxy. The reason I ask is if
it's a MITM proxy, ala Bluecoat, the proxy actually looks at the session
contents. If the packets don't look like proper allowed traffic it gets
blocked.
If it's a dumb proxy you might be able to get through using something like
httptunnel. Stating "access the Internet" doesn't explain what kind of
traffic is allowed, however my assumption ( I hate to assume ) is they
only want to allow http / https traffic, with perhaps ftp traffic too.
diana
