在一台Cisco路由器的g0/1端口封禁ICMP协议,只允许169.15.12.0/24和11 9.75.108.0/24子网的ICMP政据包通过路由器正确的access-list配置是
A.
Router(config)#access-list 198 permit icmp 169.15.128.0.0.0.0.255 any Router(config)#access-list 198 permit icmp 119.75.108.0.0.0.0.255 any Router(Config)#access-list 198 deny icmp any any Router(config)#access-list 198 permit ip any any Router(config)#interface g0/1 Router(config-if)#ip access group 198 in Router(config-if#ip access-group 198 out Router(config-if)#
B.
Router(config)#access-list 98 permit icmp 169.15.128.0.0.0.0.255 any Router(config)#access-list 98 permit icmp 119.75.108.0.0.0.0.255 any Router(config)#access-list 98 deny icmp any any Router(config)#access-list 98 permit ip any any Router(config)#interface g0/1 Router(config-if)#ip access group 98 in Router(config-if#ip access-group 98 out Router(config-if)#
C.
Router(Config)#access-list 198 deny icmp any any Router(config)#access-list 198 permit icmp 169.15.128.0.0.0.0.255 any Router(config)#access-list 198 permit icmp 119.75.108.0.0.0.0.255 any Router(config)#access-list 198 permit ip any any Router(config)#interface g0/1 Router(config-if)#ip access-group 198 in Router(config-if#ip access-group 198 out Router(config-if)#
D.
Router(config)#access-list 98 permit icmp 169.15.128.0.0.0.0.255 any Router(config)#access-list 98 permit icmp 119.75.108.0.0.0.0.255 any Router(config)#access-list 100 permit ip any any Router(config)#access-list 100 permit ip any any Router(config)#interface g0/1 Router(config-if)#ip access group 100 in Router(config-if#ip access-group 100 out Router(config-if)#