Hi all, I am relatively new to both Ubuntu and Linux, and I'm trying to figure out how to secure my computer with a firewall. My previous attempt with Firestarter was rather miserable, since it screwed up my home network. I've reinstalled my system, and this time I want to just use iptables, without firestarter. Situation: I am a pretty average user, and need little more than http, https, and possibly ftp. I probably won't need to have ssh open or anything else like that. My computer is connected to a home network via an ethernet router, along with two other computers running Windows XP. I don't want to lose connection to those -ie I want to be able to view shares. I've read a bit about iptables, and know how to add rules. The only thing is, I'm not sure what rules to add. So, my question is, does anyone have a script or a set of rules for a setup similar to mine that they'd be willing to share? Also, if I'm not mistaken, iptables rules added at the command line are not saved by default. I seem to remember to ways of saving them: (please correct any errors/fill in any gaps) using iptables-save and -restore lines to save and load rules from a file in /etc/network/interfaces writing a bash script and putting it somewhere (I remember there was an initrc file or directory, but I forget the exact location) so that it runs on boot Thanks in advance! Jimmy PS - my current iptables set up is accept all: not very secure Chain INPUT (policy ACCEPT 2504 packets, 1703K bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 2599 packets, 520K bytes) pkts bytes target prot opt in out source destination