IDMS is a very powerfull firewall configuration script with support for basically any type of system. It features an easy to use configuration, traffic shaping/logging, spoof protection, and dynamic table reloading.
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A total redesign, moving all table creation over to parse_rules, addition of SMASQ, traffic shaping support, traffic logging support fixes, creation of functions for all tables, dynamic loading of "tables", and a new table cleanup function to remove stale tables.