RouterA(config)#access-list 103 remark stop telnet to router A whose source ip 1.1.1.2
RouterA(config)#access-list 103 deny tcp host 1.1.1.2 host 1.1.1.2 eq 23
RouterA(config)#access-list 103 permit ip any
RouterA(config)#int s0/0
RouterA(config-if)#ip access-group 103 in
RouterA#show access-lists
Extended ip access list 103
Deny tcp host 1.1.1.2 host 1.1.1.1 eq telnet(2 matches)
Permit ip any (160 matches)
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