n.防火壁；隔火墻

The proxy firewall maintain context more easily than the packet filter firewall. 代理防火墻比包過(guò)濾器防火墻易于保持更多的上下文

The firewall sit between the power phone system internal network and the public data network. 防火墻位于強(qiáng)力電話系統(tǒng)內(nèi)部網(wǎng)絡(luò)與公共數(shù)據(jù)網(wǎng)絡(luò)之間。

The packet filter rout provide the same functionality as the packet filter firewall describe in section2.1.1. 包過(guò)濾路由器與包過(guò)濾防火墻具有同一功能，如2。1。1部分所述。

Inside of the firewall the only permit destination for traffic from the interior or exterior route is the bastion host. 在防火墻內(nèi)部，對(duì)于來(lái)自?xún)?nèi)外部路由器的通信量來(lái)說(shuō)，唯一允許到達(dá)的目的地是bastion主機(jī)。