基于用户的邮件过滤在防火墙中的实现

Implementation of Mail Filter Based on User under Firewall

邮件的内容过滤是防火墙的一项重要功能,介绍了一个基于用户过滤的实现方法,实现了基于用户规则的、灵活的邮件过滤,还支持对于邮件附件的解压缩、文档格式转换等深层次过滤,在基于LINUX内核的防火墙上实现了原型。

Mail content filtering is one of important function of firewalls. The paper gives an ap- proach to the implementation of a flexible user-relation mail filtering, based on user, as well as of its prototype under Lunix by supporting deep content filtering such as freeing compressed files and con- verting formatted documents.