Common Ports Flashcards by Mathew Kurtz

Q

20

A

FTP Data Transfer
TCP

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Q

443

A

HTTPS over TSL/SSL
TCP

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Q

80

A

HTTP (can also use 8008, 8080)
TVP/UDP

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Q

23

A

Telnet unencrypted text
TCP

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Q

137

A

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Q

22

A

SSH/SFTP/SCP
TCP/UDP

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Q

143

A

IMAP (Internet Message Access Protocol)

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Q

25

A

SMTP (can also use 2525)
TCP

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Q

110

A

POP3
TCP

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Q

21

A

FTP Control
TCP

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Q

138

A

NetBIOS Datagram Service
TCP/UDP

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Q

389

A

LDAP

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Q

53

A

DNS

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Q

119

A

NNTP

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Q

123

A

NTP (Network Time Protocol)

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Q

989

A

FTPS Data

Q

990

A

FTPS Control

Q

465

A

SMTPS

Q

995

A

POP3S

Q

3389

A

MS RDP

Q

563

A

NNTPS (Network News Transfer Protocol Secure)

Q

993

A

IMAPS

Q

49

A

TACACS

Q

67/68

A

DHCP/BOOTP

69

TFTP

88

KERBEROS

500

IPSec/ISAKMP/IKE

514

syslog

Well-known ports

0-1023

1024-49151

Registered ports

Dynamic/Private/Ephemeral Ports

49152-65535