TCP/IP Port Numbers Flashcards

1
Q

TFTP

A

UDP 69

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2
Q

HTTP

A

TCP 80

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3
Q

FTP

A

TCP 20 (Data) & TCP 21 (Control)

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4
Q

161/162

A

SNMP UDP

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5
Q

POP3

A

TCP 110

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6
Q

NTP

A

UDP 123

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7
Q

443

A

HTTPS (HTTP over SSL) TCP

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8
Q

22

A

SSH TCP

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9
Q

SMTP

A

TCP 25

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10
Q

25

A

SMTP TCP

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11
Q

80

A

HTTP TCP

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12
Q

21

A

FTP (Control) TCP

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13
Q

NNTP

A

TCP 119
NetworkNews Transfer Protocol

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14
Q

119

A

NNTP TCP

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15
Q

20

A

FTP (Data) TCP

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16
Q

53

A

DNS TCP/UDP

17
Q

110

A

POP 3 TCP

18
Q

23

A

Telnet TCP

19
Q

SNMP

A

UDP 161/162

20
Q

DNS

A

UDP 53 or TCP 53

21
Q

HTTPS

A

TCP 443

22
Q

123

A

NTP UDP

23
Q

SSH

A

TCP 22

24
Q

Telnet

A

TCP 23

25
Q

69

A

TFTP UDP