Firestarter is overly restrictive by default. If you need network services, you have to specifically open all the necessary ports. For a firewall configuration, the LAN side of things should be fairly open and unrestrictive but that's certainly not the case here. Simple things like printer sharing and file sharing are rendered useless by Firestarter unless you really know how to configure it well.
Also, Firestarter is not supported in Ubuntu which means that you're relying on the Ubuntu community for updates. Plus it has a conflict with Network-Manager: https://help.ubuntu.com/community/Fi...roubleshooting
Finally, most people don't realize that Firestarter is simply a front end for IPtables, which means that even if Firestarter is not running, your firewall IS active. This fact alone causes more headaches than I care to recall.
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