RE: Head's Up Your Network Admins...

[Ken Sims <mr3111@xxxxxxxxx>]

Hi Mike -

> 22, but they are having you change it to 80. So just blocking that port
> won't work. You I believe you have to filter the packets?

I don't know what they use on our internet gateway, but I do know that if 
it doesn't like what it sees on port 80, it blocks it.  I found this out 
when using telnet on port 80 to emulate a browser so I could see the raw 
data coming back to diagnose a problem.  Forgetting to put in any little 
thing, even if a webserver would have accepted the request, caused the 
firewall to issue an error message and drop the connection.

So I really doubt that SSH on port 80 or IRC on port 80 or any of that kind 
of underhanded stuff would get through.  The people who code the high-end 
enterprise firewalls aren't stupid.

Ken
http://www.ke9nr.net/
Opinions expressed are my own and do not necessarily represent the views of 
my employer or anyone in their right mind.