Quarantine is yet another firewall that has masquerade, TOS, and traffic shaping features. It has a lot of options, but is quite easy to configure. It was formerly known as Netwall.
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Quarantine has partially been rewritten and a major code cleanup was made. A new module system is introduced that makes some uncomfortable configuration options obsolete. Some bugfixes were made and new tools and features were added: qmodule for module creation, an upgrade script that makes upgrading from quarantine prior to 0.2.0 easier, post-loading of modules, etc. Note: this release is not really backwards-compatible, so there may be some adaptions to your configuration to be made.
