Say it ain't so

["Jim Leo" <ADMIN () everett pitt cc nc us>]

Hi All,
        I've got a meeting with our Firewall Installers on the 29th. Got 
pulled into as a result of 'centralizing' our computer/technology 
staff and creation of a helpdesk. The upshot is this. We have been 
apprised by one of the staff (Originally selected 
installation/Firewall) and was told that every device behind the 
firewall would have to 'be touched' for anything to work. It almost 
sounds like a complete rework of the network setup/standard. We were 
told that all IP addresses would have to be changed. Somehow I get 
the impression that this is the installers idea, and I'm not quite 
willing to by into it. I feel that it should be possible to 'plug-in' 
any properly configured firewall (with the exception of the proxies) 
and not have to reconfigure machines. 
        Am I wrong?
Jim Leo
admin () everett pitt cc nc us