軟體防火牆 - m0n0wall

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m0n0wall 是一項針對建立一個完整的、嵌入式的軟體防火牆計劃，該軟體可以安裝於嵌入式PC中，提供所有商業防火牆的重要特性（包括易用性），而且價格卻只有這些商業防火牆幾分之一（自由軟件）。
m0n0wall是基於bare-bones version of FreeBSD，包括一個WEB伺服器、PHP和另一些工具軟體。整個系統的設定存儲在一個XML文件當中。
m0n0wall可能是第一個啟動時使用PHP頁面的UNIX系統，這種結構勝過其它使用shell腳本。並且整個系統的配置用XML格式儲存。

m0n0wall is a project aimed at creating a complete, embedded firewall software package that, when used together with an embedded PC, provides all the important features of commercial firewall boxes (including ease of use) at a fraction of the price (free software).
m0n0wall is based on a bare-bones version of FreeBSD, along with a web server, PHP and a few other utilities. The entire system configuration is stored in one single XML text file to keep things transparent.
m0n0wall is probably the first UNIX system that has its boot-time configuration done with PHP, rather than the usual shell scripts, and that has the entire system configuration stored in XML format.

http://m0n0.ch/
http://www.m0n0china.org/
http://m0n0.org/bbs/
http://www.m0n0.com.tw/wall/