Security

[Coastie]

If you'd like, you can enable the firewall without adding any special rules.  It's default settings will be to deny incoming connections and allow outgoing connections.  If an incoming request is simply a reply to one of your program's outgoing queries, it will be accepted  (eg.  Firefox requesting a page to view); but if it is just some random attempted connection it will be denied. ...

I have turned on the firewall as per these instructions. Are there any "special rules" that I might need? Is there any need for a graphical interface like Firestarter for a Linux newby like me? :-\