Common Ports Flashcards by Garrett Gallella | Brainscape

Q

FTP (File Transfer Protocol)

A

tcp/20 (active mode data)
tcp/21 (control data transfer)

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Q

SSH (Secure Shell)

A

tcp/22

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Q

TelNet (Telecommunication Network)

A

tcp/23

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Q

SMTP (Simple Mail Transfer Protocol)

A

tcp/25

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Q

DNS (Domain Name System)

A

udp/53

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Q

DHCP (Dynamic Host Configuration Protocol)

A

udp/67 & udp/68

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Q

HTTP

A

tcp/80

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Q

HTTPS

A

tcp/443

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Q

POP3 (Post Office Protocol v3)

A

tcp/110

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Q

IMAP (Internet Message Access Protocol v4)

A

tcp/143

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Q

SMB (Server Message Block) + NetBIOS

A

udp/137 (nbname)
tcp/139 (nbsession)

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Q

SMB (Server Message Block) NetBIOS-less

A

tcp/445

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Q

SNMP (Simple Network Management Protocol)

A

udp/161 (queries)
udp/162 (traps)

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Q

LDAP (Lightweight Directory Access Protocol)

A

tcp/389

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Q

RDP (Remote Desktop Protocol)

A

tcp/3389

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