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Year 2 - Chapter 6/Cisco 3 - Module 6 ACLs - page 25 / 40

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Extended ACLs – Protocol Identifiers

After choosing a relational operator, specify a mnemonic (or acronym) or port number, such as the following code output for the TCP port names:

Lab-X(config)#access-list 101 deny tcp any eq ?

 <0-65535>    Port number

 bgp          Border Gateway Protocol (179)

 chargen      Character generator (19)

 cmd          Remote commands (rcmd, 514)

 daytime      Daytime (13)

 discard      Discard (9)

 domain       Domain Name Service (53)

 echo         Echo (7)

 exec         Exec (rsh, 512)

 finger       Finger (79)

 ftp          File Transfer Protocol (21)

--Some output omitted—

 uucp         Unix-to-Unix Copy Program (540)

 whois        Nicname (43)

 www          World Wide Web (HTTP, 80)

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