Although one may argue that a firewall does not really solve the security problems of an organization, I highly doubt anyone would design a modern network security schema without a solid firewall. There are many open source network firewalls available on the market and this is why I was very glad to discover an open [...]

AQTRONIX WebKnight is an application firewall for IIS and other web servers and is released under the GNU General Public License

NuFW is an enterprise grade firewall that performs an authentication of every single connection passing through the IP filter, by transparently requesting user’s credentials before any filtering decision is taken