Common Network Ports Flashcards

1
Q

File Transfer Protocol (FTP)

A

TCP 20, 21

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2
Q

Secure Shell (SSH)

A

TCP & UDP 22

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3
Q

SCP

A

TCP & UDP 22

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4
Q

Telnet

A

TCP 23

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5
Q

Simple Mail Transfer Protocol (SMTP)

A

TCP 25

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6
Q

IPSec

A

Protocol 50 & 51

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7
Q

Domain Name Server (DNS)

A

TCP & UDP 53

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8
Q

Dynamic Host Configuration Protocol (DHCP)

A

UDP 67, 68

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9
Q

Trivial File Transfer Protocol (TFTP)

A

UDP 69

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10
Q

HyperText Transfer Protocol (HTTP)

A

TCP 80

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11
Q

Post Office Protocol (POP3)

A

TCP 110

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12
Q

Network News Transport Protocol (NNTP)

A

TCP 119

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13
Q

Network Time Protocol (NTP)

A

UDP 123

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14
Q

NetBIOS

A

TCP & UDP 135-139

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15
Q

Internet Message Access Protocol (IMAP4)

A

TCP & UDP 143

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16
Q

Simple Network Management Protocol (SNMP)

A

TCP & UDP 161, 162

17
Q

Lightweight Directory Access Protocol (LDAP)

A

TCP & UDP 389

18
Q

HTTP with Secure Sockets Layer (SSL)

A

TCP & UDP 443

19
Q

Point-to-Point Tunneling Protocol (PPTP)

A

TCP 1723

20
Q

File Transfer Protocol Secure (FTPS)

A

TCP & UDP 990

21
Q

RADIUS authentication

A

UDP 1812

22
Q

RADIUS accounting

A

UDP 1813

23
Q

IPSec (AH - Authentication Header)

A

Protocol 51 (Authentication)

24
Q

IPSec (ESP)

A

Protocol 50 (Encryption)

25
Q

Netstat

A

TCP & UDP 15

26
Q

SMB

A

TCP 445

27
Q

Port Map

A

TCP & UDP 111

28
Q

L2TP

A

UDP 1701

29
Q

MS SQL Server

A

TCP 1433

30
Q

Kerberos

A

UDP 88

31
Q

SMTP TLS/SSL

A

TCP 465

32
Q

IPSec (IKE)

A

UDP 500

33
Q

LDAP SSL/TLS

A

TCP 636

34
Q

IMAP SSL/TLS

A

TCP 993

35
Q

POP SSL/TLS

A

TCP 995

36
Q

SFTP

A

TCP & UDP 22

37
Q

TACACS+

A

TCP 49