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UDP and TCP Port Number Usage in ACL’s in Cisco IOS

Cisco Router and IOS How To's / By

Post Views: 3,218 As most of us know, a key to managing the Internet is knowledge of TCP and UDP port numbers. Cisco IOS uses Access Control Lists for many purposes, but in this tip, we will focus on TCP and UDP port numbers. Port numbers are unique, well-known, registered or ephemeral numbers used by

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