Netscape Navigator doesn't remember ANS Interlock firewall password

If your domain is connected to the outside world through an "ANS
InterLock" firewall proxy server, you may notice that Netscape Navigator
will not remember your firewall password; instead, it keeps prompting
for the firewall password every time you try to retrieve a page through
the firewall.
This is because the only way to do authentication through a firewall
used to be to use the HTTP authentication mechanism.  This is a
troublesome approach, because the HTTP authentication was designed to
work properly only between the client and the final destinatation
server, not an intermediate proxy agent.
To solve this, get the "InterLock netscape_forwarder" patch from ANS by
sending a request for it to "ilsupport@reston.ans.net".  Netscape
Navigator and InterLock netscape_forwarder work properly together.