[lug] Why Do I Need a Firewall?

[Rob Nagler]

Bill Thoen writes:
> simple set up, why do I need a firewall and what should I set it to filter? 

Security is always difficult to assess with so little information.  My
thinking is: iptables is trivial to set up, and the cost of an attack
is very expensive.  The likelihood of a successful attack is extremely
low, but iptables lowers it even more, probably to an epsilon where
you don't need other measures, such as auditing and (shudders)
SELinux. :-)

Rob