[TriLUG] Have I been compromised?

[Jon Carnes]

Very secure setup, just check for kernel and IPChains vulnerabilities on a 
regular basis and you are probably going to be just fine.

I have a firewall that has been up and running for about 2 years now that 
is setup exactly like yours.

Jon
>
> I've got a variation on the question. My router & firewall system runs
> Redhat 7.0 updated to kernel 2.4.13. I went through all the trouble to
> configure iptables myself. I told it to block any incomming traffic that
> isn't in response to a client request from inside the LAN. The machine
> will not even respond to pings, along with many other simple attempts at
> communication. How secure is a setup like this?
>