An open system has to face up to various threats and attacks. We introduce of the traditional firewall technology.

作为一个面向大众的开放系统，计算机网络面临着来自各方面的威胁和攻击。

youdao

An open system has to face up to various threats and attacks. We introduce of the traditional firewall technology.

作为一个面向大众的开放系统，计算机网络面临着来自各方面的威胁和攻击。

youdao