Internal Address Space

[dnewman@maraudingpirates.org (David F. Newman)]

Hi there,
In the old IPv4 days sites would use private address space inside a firewall 
for either address conservation or just plain old security through obscurity.

Now that a site can get a /48 to do with as they please is it necessary to use 
private IP space anymore.  I am wondering if people out there use public 
routable IPs on both sides of their firewall.  I figure if a node is behind a 
firewall it is ok to have a valid IP, but I could be wrong.

-Dave