network port numbers

Question 1

DHCP

Answer 1

UDP 67 - CLIENTS

UDP 68 - SERVER

Question 2

DNS

Answer 2

UDP 53

Question 3

ftp data/control

Answer 3

20/21

Question 4

H.323

Answer 4

port 1720

Question 5

http

Answer 5

80

Question 6

https

Answer 6

443

Question 7

imap

Answer 7

143

Question 8

IMAPS

Answer 8

993

Question 9

Kerberos

Answer 9

UDP or TCP 88

Question 10

LDAP

Answer 10

389

Question 11

LDAPS

Answer 11

636

Question 12

NETBIOS

Answer 12

TCP 137 & 139

UDP 137 & 138

Question 13

NNTP

Answer 13

TCP 119

Network News Transfer Protocol

Question 14

NTP

Answer 14

UDP 123

Question 15

pop3

Answer 15

110

Question 16

POP3S

Answer 16

995

Question 17

Port Number Ranges

Answer 17

0-1023 Well-known ports

1024-49151 Registered ports

49152-65535 Dynamic, private, or ephemeral ports

Question 18

RADIUS

Answer 18

UDP 1812 & 1813 or UDP 1645 & 1646

Question 19

RDP

Answer 19

Remote Desktop Protocol

port 3389

Question 20

RTSP

Answer 20

TCP 554

Question 21

SIP

Answer 21

TCP 5060 & 5061

Question 22

SMB

Answer 22

Server Message Block (SMB) is the Internet standard protocol Windows uses to share files, printers, and serial ports.

TCP 445

SMB running atop NetBIOS over TCP uses the same ports UDP 137 & 138, TCP 137 & 139. Without NetBIOS, SMB uses TCP port 445

Question 23

smtp

Answer 23

25

Question 24

smtps

Answer 24

465

Question 25

SNMP

Answer 25

SNMP managers: UDP 162 or 10162 (with TLS) SNMP agents: UDP 161 or 10161 (with TLS) 161 and 162

Question 26

ssh

Answer 26

22

Question 27

SSL/TLS

Answer 27

443

Question 28

syslog

Answer 28

514

Question 29

TACACS+

Answer 29

TCP 49

Question 30

telnet

Answer 30

23

Question 31

TFTP

Answer 31

UDP 69

Question 32

RTP

Answer 32

Real-Time Transport Protocol TCP 5004 & 5005

Question 33

MGCP

Answer 33

Media Gateway Control Protocol TCP 2427 & 2727