[ale] L7 filtering in Netfilter

[mr at 4securenet.com (Raju)]

Anyone had success with this?

http://l7-filter.sourceforge.net/

Nowadays you can pretty much tunnel any protocol through standard
out-bound ports in Firewalls (most security policies obvisouly allow 80,
443, etc), differentiating HTTP from Gnutella, etc. can be difficult with
out L7 inspection. Although Checkpoint's FW-1 stateful-inspection claims
it can understand L7 information without taking a performance hit
(proxies), I was hoping for an Open Source solution without paying
ridiculous license fees :-) Try changing the IP address bound to an
interface with Check Point? Talk about a pain the a$$.....sheeez


--Raju