What GUI firewall manager should I use to replace Firestarter?

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http://askubuntu.com – Apparently Firestarter is no longer maintained, and it does not have any options in its interface for handling the connection to a VPN. Right now, my VPN does not work if my Firewall is activated. I would like to find an alternative GUI firewall manager that will let me make configurations to accomodate my VPN service. Which should I use, and what considerations should I take into account when migrating from Firestarter? I did a Google search, and tried to restrict results within the last year, but it seems people are still recommending Firestarter, despite it not being maintained. With alm (HowTos)