Cisco routers with ACL (access control list capabilities interconnect the networ

Question

Cisco routers with ACL (access control list capabilities interconnect the network shown above. Assume that the network set up is standalone in that it is not connected to outside networks. Write one or more ACLs to accomplish each of the following (each specification is a separate question): Prevent all traffic from 192.168.2.0 from going to 192.168.1.0 Prevent all traffic from 192.168.3.1 from going to 192.168.2.1 Prevent FTP access from 2.1 to 3.1 Prevent Telnet and FTP access from 3.1 to 1.1 Prevent any SNMP traffic from 2.1 from leaving the network 192.168.2.0

Explanation / Answer

A) access-list 101 deny ip 192.168.2.0 0.0.0.255 192.168.1.0 0.0.0.255

B) access-list 101 deny ip 192.168.3.1 0.0.0.255 192.168.2.1 0.0.0.255

C) access-list 101 deny tcp 192.168.2.1 0.0.0.255 192.168.3.1 0.0.0.255 eq 21
access-list 101 permit ip any any

D) access-list 101 deny tcp 192.168.3.1 0.0.0.255 192.168.1.1 0.0.0.255 eq telnet
   access-list 101 deny tcp 192.168.3.1 0.0.0.255 192.168.1.1 0.0.0.255 eq 21
   access-list 101 permit ip any any


E)access-list 101 deny udp 192.168.2.1 0.0.0.255 192.168.2.0 0.0.0.255 eq snmp
   access-list 101 permit ip any any

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