Non-IP firewalling.

[avalon @ coombs . anu . edu . au (Darren Reed)]

While IP might be the most common protocol and cause the most problems
for people, does much firewall software provide options for firewalling
other protocols such as OSI CLNP, Ethernet, DECNet, AppleTalk, IPX, etc ?

Of these, I'm most interested in support for CLNP firewalling since it
has some presence on the InterNet and on the NSF backbone.

Darren