What does the following access list, which is applied on the external interface FastEthernet 1/0 of the perimeter router, accomplish? router(config)#access-list 101 deny ip 10.0.0.0 0.255.255.255 any log router (config)#access-list 101 deny ip 192.168.0.0 0.0.255.255 any log router (config)#access-list 101 deny ip 172.16.0.0 0.15.255.255 any log router (config)#access-list 101 permit ip any any router (config)#interface fastEthernet 1/0 router (config-if)#ip access-group 101 in

A. It prevents incoming traffic from IP address ranges 10.0.0.0-10.0.0.255, 172.16.0.0- 172.31.255.255, 192.168.0.0-192.168.255.255 and logs any intrusion attempts.

B. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet.

C. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts.

D. It prevents private internal addresses to be accessed directly from outside.








 

Suggested Answer: C



This question is in 300-101 Cisco Implementing Cisco IP Routing (ROUTE) Exam
For getting Cisco Certified Network Professional (CCNP) Routing and Switching Certificate




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