Port Numbers for CCNA/Net+

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Last updated 7:01 PM on 2/19/25
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23 Terms

1
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FTP (File Transfer Protocol) Data

TCP/20

2
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FTP (File Transfer Protocol) Control

TCP/21

3
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SSH (Secure Shell)

TCP/22

4
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Telnet

TCP/23

5
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SMTP (Simple Mail Transfer Protocol)

TCP/25

6
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DNS (Domain Name System)

UDP & TCP/53

7
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DHCP (Dynamic Host Configuration Protocol) Server

UDP/67

8
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DHCP (Dynamic Host Configuration Protocol) Client

UDP/68

9
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TFTP (Trivial File Transfer Protocol)

UDP/69

10
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HTTP (Hypertext Transfer Protocol)

TCP/80

11
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POP3 (Post Office Protocol)

TCP/110

12
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NTP (Network Time Protocol)

UDP/123

13
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SNMP (Simple Network Management Protocol) Agents

UDP/161

14
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SNMP (Simple Network Management Protocol) Traps
Agent sends trap to manager

UDP/162

15
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LDAP (Lightweight Directory Access Protocol)

TCP/389

16
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HTTPS (Hypertext Transfer Protocol Secure)

UDP & TCP/443

17
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SMB (Server Message Block)

TCP/445

18
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Syslog

UDP/514

19
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SMTPS (Simple Mail Transfer Protocol Secure)

TCP/587

20
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LDAPS (Lightweight Directory Access protocol over SSL)

TCP/636

21
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SQL (Structured Query Language) Server

TCP/1433

22
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RDP (Remote Desktop Protocol)

TCP/3389

23
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SIP (Session Initiation Protocol)

TCP/5060 & 5061

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