Ports & Protocols Flashcards

1
Q

TCP 25

A

SMTP

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2
Q

TCP/UDP 7

A

Echo

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3
Q

TCP 15

A

Netstat

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4
Q

TCP/UDP 19

A

CHARGEN (character generator protocol)

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5
Q

TCP 20 (data) & 21 (control)

A

FTP

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6
Q

TCP 22

A

SSH - Secure Shell
SCP (uses SSH)
SFTP (uses SSH)

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7
Q

TCP 23

A

Telnet

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8
Q

TCP/UDP 49

A

TACACS+

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9
Q

TCP/UDP 53

A

DNS

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10
Q

TCP/UDP 67 & 68

A

DHCP

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11
Q

UDP 69

A

TFTP
(Trivial File Transfer Protocol)

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12
Q

TCP 80 or 8080

A

HTTP

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13
Q

TCP 110

A

POP3

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14
Q

TCP/UDP 119

A

NNTP
(Network News Transfer Protocol)

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15
Q

TCP/UDP 123

A

NTP

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16
Q

TCP 137-139

A

NetBIOS

17
Q

TCP 143

A

IMAP

18
Q

UDP 161 & 162

A

SNMP

19
Q

TCP/UDP 389

A

LDAP

20
Q

TCP 443

A

HTTPS

21
Q

UDP 1701

A

L2TP (Layer 2 Tunneling Protocol)
Extension of the Point-to-Point Tunneling Protocol. L2TP is often used with IPSec to establish a Virtual Private Network (VPN).

22
Q

TCP 1723

A

PPTP (Point-to-Point Tunneling Protocol)
Used for key exchange and IP protocol 47 (GRE) to encrypt data between peers.

23
Q

UDP 1812

A

RADIUS

24
Q

TCP 3389

A

RDP (Remote Desktop Protocol)

25
Q

TCP 3668

A

DIAMETER