Port Numbers Flashcards by Collin Ewing

Q

FTP (active)

A

tcp/20

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Q

FTP (control)

A

tcp/21

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Q

SSH

A

tcp/22

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Q

Telnet

A

tcp/23

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Q

SMTP

A

tcp/25

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Q

DNS

A

udp/53

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Q

HTTP

A

tcp/80

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Q

HTTPS

A

tcp/443

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Q

RDP

A

tcp/3389

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Q

nbname

A

udp/137

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Q

nbdatagram

A

udp/138

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Q

nbsession

A

tcp/139

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Q

SMB/CIFS

A

tcp/445

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Q

AFP

A

tcp/548

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Q

SLP

A

tcp and udp/427

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Q

DHCP

A

UDP/67, UDP/68

Q

LDAP

A

tcp/389

Q

SNMP (queries)

A

udp/161

Q

SNMP (traps)

A

udp/162

Q

POP3

A

tcp/110

Q

IMAP4

A

tcp/143

Q

POP3s

A

tcp/995

Q

IMAPS

A

tcp/993

Q

SMTP with authentication

A

tcp/587