common TCP/IP ports

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10 Terms

1
New cards

20 & 21

FTP - File Transfer Protocol – Port 20 for data

2
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22

SSH - Secure Shell – Encrypted remote login

3
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23

Telnet - Unencrypted remote login (not secure)

4
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25

SMTP - Simple Mail Transfer Protocol – Sends email

5
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53

DNS - Domain Name System – Resolves domain names to IP addresses

6
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80

HTTP - HyperText Transfer Protocol – Unencrypted web traffic

7
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110

POP3 - Post Office Protocol v3 – Retrieves email from a server

8
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143

IMAP - Internet Message Access Protocol – Advanced email retrieval

9
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443

HTTPS - HTTP Secure – Encrypted web traffic over SSL/TLS

10
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3389

RDP - Remote Desktop Protocol – Windows remote GUI access