Sizing a firewall

[Walt Sullivan <walt () trytel com>]

I'm consulting for a Canadian government agency that plans to allow
desktop access to the Internet for the first time next year (yes, I
know, "Forward into the 70's", but is is government).

They think they have about 25,000 desktops (Windows 95/98, shudder).

How can I help them predict the amount of traffic they'll see on their
T1 connection?

Is there anybody out there running a firewall for 25K desktops that is
willing to share an order-of-magnitude guess?

Thanks,

Walt

-- 
Walt Sullivan
UNIX & Networks, Security & SysAdmin
walt () trytel com