Shorewall is an iptables-based firewall for Linux Systems. Its configuration is very flexible, allowing it to be used in a wide range of firewall/gateway/router and VPN environments. License: GNU General Public License (GPL)Changes:
This release supports creation of IPv6 firewalls as well as IPv4.[](http://feedads.googleadservices.com/~at/pYfhpcdF9A-bP3Un2RcOcdxVX28/a)
