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Users on subnet 172.16.1.112/28 are causing some problems when they access the server 172.16.1.30 through Telnet. Which command can the network administrator issue on the router to solve this problem?
"access-list 10 deny tcp 172.16.1.112 0.0.0.15 host 172.16.1.3 eq 23", "access-list 10 permit ip any any".
"access-list 10 deny tcp 172.16.1.112 0.0.0.255 host 172.16.1.30 eq 21", "access-list 10 permit ip any any".
"access-list 101 deny tcp 172.16.1.112 0.0.0.15 172.16.1.30 0.0.0.0 eq 23", "access-list 101 permit ip any any".
"access-list 101 deny tcp 172.16.1.112 0.0.0.240 172.16.1.30 0.0.0.0 eq 21", "access-list 101 permit ip any any".
For more information refer to: http://www.cisco.com/c/en/us/support/docs/security/ios-firewall/23602-confaccesslists.html
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