From LQWiki
Endian is a firewall distribution based on the 2.6 kernel. There are 2 versions; the 'turnkey' type commercial edition and the community edition. The 2 editions work very similar to the Redhat / Fedora development model. Endian Community claims to be a true 'open-source' distribution.
Some of the features of Endian include:
* Stateful packet inspection firewall * Proxies for various protocols including HTTP, FTP, POP3 and SMTP * Virus and Spam filtering for email traffic * Content filtering of Web traffic * VPN client and server using based on OpenVPN
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