Ports and protocols

Question 1

Which service typically runs on port 22?

Answer 1

SSH

Question 2

Which service typically runs on port 20?

Answer 2

FTP.

Port 21 is the control port while port 20 is used for transferring files

Question 3

Which service typically runs on port 49

Answer 3

TACACS+ (cisco)

Question 4

Which service typically runs on port 53?

Answer 4

DNS

Question 5

Which service typically runs on port 67

Answer 5

DHCP

Question 6

Which service typically runs on port 80

Answer 6

HTTP

Question 7

Which service typically runs on port 88

Answer 7

Kerberos

Question 8

Which service typically runs on port 110

Answer 8

POP

Email protocol

Question 9

Which service typically runs on port 21?

Answer 9

FTP.

Port 21 is the control port while port 20 is used for transferring files

Question 10

Which service typically runs on port 68?

Answer 10

DHCP

Question 11

Which service typically runs on port 143?

Answer 11

IMAP

Question 12

Which service typically runs on port 993?

Answer 12

IMAP
or
IMAPS (tls encryption)

(email protocol)

Question 13

Which service typically runs on port 161

Answer 13

SNMP

Question 14

Which service typically runs on port 162?

Answer 14

SNMP

Question 15

Which service typically runs on port 389

Answer 15

LDAP

used to manage and communicate with directories

Question 16

Which service typically runs on port 443

Answer 16

HTTPS

Question 17

Which service typically runs on port 636?

Answer 17

LDAPS

Question 18

Which service typically runs on port 995?

Answer 18

POP3S

encrypted version of POP that uses tls

Question 19

Which service typically runs on port 1812/1813?

Answer 19

RADIUS

Question 20

Which service typically runs on port 3868?

Answer 20

DIAMETER

upgrade to RADIUS

Question 21

Which service typically runs on port 5004?

Answer 21

SRTP

SRTP replaced RTP and is a protocol used to stream audio/video using udp

Question 22

Which service typically runs on port 1701?

Answer 22

L2TP

(layer 2 tunnel protocol)

(used to create point to point connections like VPNs over a UDP connection)

Question 23

Which service typically runs on port 3389?

Answer 23

RDP

(remote desktop protocol)
(windows protocol that provides remote connection between two computers, like ssh, but windows. Think windows when you think RDP. 3389=windows)