A.dmz区域B.drop区域C.work区域D.ICMP区域
A.应用层防火墙B.iptablesC.检测型防火墙D.包转发型防火墙
A.入站:PREROUTING--INPUTB.出站:OUTPUT--POSTROUTINGC.转发:PREROUTING--FORWARD--POSTROUTINGD.转发:INPUT--FORWARD--OUTPUT