摘要
网关采用双网卡透明网桥模式,拦截邮件服务器的网络数据包,从网络层、SMTP协议层和邮件内容层分别过滤网络报文和邮件内容。重点介绍了邮件过滤网关的系统结构和主要关键技术。
This email gateway works in transparent bridge mode and filters all packets going to or coming from the email server.It filters network packets and email content in different layers.In this paper,the design of system structure of the email gateway is described.In addition,some key technologies of email gateway are introduced.
出处
《网络安全技术与应用》
2006年第8期76-78,共3页
Network Security Technology & Application
