A.Share B.User C.Server D.Domain
A.ISA B.CCProxy C.Squid D.IPtables
A.Iptables工作在應(yīng)用層,屬于應(yīng)用層代理 B.Iptables工作在網(wǎng)絡(luò)層,屬于包過濾型防火墻 C.Iptables主要有input,output,forward,prerouting,postrouting五個(gè)規(guī)則鏈 D.Iptables工作在傳輸層,屬于包過濾型防火墻