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You are here: Home / ICND1 / Day 9 – Access Control Lists / Day 9 Tasks / Port Numbers

Port Numbers

You simply must know the common port numbers by heart if you want to pass the CCNA exam and to work on live networks. Looking up common port numbers isn’t an option when you have customers watching what you are doing. Here are the most common port numbers you will encounter and will need to know:

 

TABLE 9.1 – Common CCNA Port Numbers

Port

Service

Port

Service

20

FTP Data

80

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