If this is a linux box, and there is no service answering said packets, what is this firewall doing?
It does not make sense to enable a service then to firewall it off?
I have recently downloaded Firestarter firewall and it seems to run fine but, for learning purposes, I would like to fine tune some iptables rules manually. Before I do this, I was wondering if this may cause problems for firestarter (assuming I make no errors in my configurations) or if firestarter will just ignore the manual rules when running (for example, if I configure PAT directly in iptables, will firestarter see this when started and display it in its gui).
I have found lots of information stating Firestarter works with ipchains/iptables but none that I have found explicitly say one way or the other whether manual configuration can be used with or should be avoided when using the product.