Review: Network Ports

0.0(0)
Studied by 0 people
call kaiCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/44

encourage image

There's no tags or description

Looks like no tags are added yet.

45 Terms

1
New cards

What is Port 20 used for?

FTP (Data).

2
New cards

Is port 20 TCP or UDP?

TCP.

3
New cards

What is the purpose of port 20?

File content transfer.

4
New cards

What is port 21 used for?

FTP (Control).

5
New cards

Is port 21 TCP or UDP?

TCP.

6
New cards

What is the purpose of port 21?

Commands, authentication, and directory listings.

7
New cards

What is Port 22 used for?

SSH.

8
New cards

Is port 22 TCP or UDP?

TCP.

9
New cards

What is port 22 used for?

Encrypted remote shell.

10
New cards

What is port 23 used for?

Telnet.

11
New cards

Is port 23 TCP or UDP?

TCP.

12
New cards

What is the purpose of port 23?

Unencrypted remote terminal.

13
New cards

What is port 25 used for?

SMTP.

14
New cards

Is port 25 TCP or UDP?

TCP.

15
New cards

What is the purpose of port 25?

Sending and relaying emails to and between servers.

16
New cards

What is port 53 used for?

DNS.

17
New cards

Is port 53 TCP or UDP?

UDP (TCP for zone transfers).

18
New cards

What is the purpose of port 53?

Name resolution, TCP for large responses.

19
New cards

What is port 67 used for?

DHCP (Server).

20
New cards

Is port 67 TCP or UDP.

UDP.

21
New cards

What is the purpose of port 67?

Client listens; receives client broadcast requests.

22
New cards

What is port 68 used for?

DHCP (Client).

23
New cards

Is port 68 TCP or UDP?

UDP.

24
New cards

What is the purpose of port 68?

Client listens; receives server responses.

25
New cards

What is port 110 used for?

POP3.

26
New cards

Is port 110 TCP or UDP?

TCP.

27
New cards

What is the purpose of port 110?

Email download (local device, deletes server copy).

28
New cards

What are ports 137-139 used for?

NetBIOS/NetBT.

29
New cards

Are ports 137-139 TCP or UDP?

137-138 UDP and 139 TCP.

30
New cards

What is the purpose of ports 137-139?

Windows name resolution & session services.

31
New cards

What is port 143 used for?

IMAP.

32
New cards

Is port 143 TCP or UDP?

TCP.

33
New cards

What is the purpose of port 143?

Email sync (remains on server across devices).

34
New cards

What is port 389 used for?

LDAP.

35
New cards

Is port 389 TCP or UDP?

TCP (sometimes TCP/UDP).

36
New cards

What is the purpose of port 389?

Directory lookups (authentication, user info).

37
New cards

What is port 443 used for?

HTTPS.

38
New cards

Is port 443 TCP or UDP?

TCP.

39
New cards

What is the purpose of port 443?

Encrypted web traffic.

40
New cards

What is port 445 used for?

SMB/CIFS.

41
New cards

Is port 445 TCP or UDP?

TCP.

42
New cards

What is the purpose port 445?

Windows file & printer sharing.

43
New cards

What is port 3389 used for?

RDP.

44
New cards

Is port 3389 TCP or UDP?

TCP.

45
New cards

What is the purpose of port 3389?

Remote Desktop graphical sessions.