User Feedback :: Firewall, Port Binding
It were more secure if a firewall (Iptables) were activated.
Or else lisening services (68, 6804) should be bound to localhost rather than all addresses.
-Hanspeter
There is a MyDSL app called rc.firewall that binds itself to not only the ppp but eth0 or whichever you decide...it works very well actually
With proper configuration it could even be used as a simple NAT router
Brian
AwPhuch
original here.