Port #

Question 1

FTP, File Transfer Protocol

Answer 1

20

21

Question 2

ssh, secure shell

Answer 2

22

Question 3

Telnet

Answer 3

23

Question 4

SMTP, Simple Mail Transport Protocol

Answer 4

25

Question 5

DNS

Answer 5

53

Question 6

TFTP, Trivial File Transfer Protocol

Answer 6

69

Question 7

HTTP, HyperText Transfer Protocol

Answer 7

80

Question 8

POP3, Post Office Protocol (version 3)

Answer 8

110

Question 9

NNTP, Network News Transport Protocol

Answer 9

119

Question 10

NTP, Network Time Protocol

Answer 10

123

Question 11

MAP, Internet Message Access Protocol (version 4)

Answer 11

143

Question 12

SNMP, Simple Network Management Protocol

Answer 12

161

Question 13

RDP, Remote Desktop Protocol

Answer 13

3389

Question 14

DHCP – Dynamic Host Configuration Protocol

Answer 14

67

68

Question 15

SNMP – Simple Network Management Protocol

Answer 15

161

Question 16

IPsec – Internet Protocol security (through the use of ISAKMP – Internet Security Association and Key Management Protocol)

Answer 16

500

Question 17

Kerberos

Answer 17

88

Question 18

HTTPS

SSL VPN – Secure Sockets Layer virtual private network

Answer 18

443

Question 19

SNMP Trap

Answer 19

162

Question 20

LDAP – Lightweight Directory Access Protocol

Answer 20

389

Question 21

Syslog

Answer 21

514

Question 22

L2TP – Layer 2 Tunneling Protocol

Answer 22

1701

Question 23

PPTP – Point-to-Point Tunneling Protocol

Answer 23

1723

Question 24

Windows file share

Answer 24

UDP-137
UDP-138
TCP-139
TCP-445