Port Numbers

Question 1

Port 53

Answer 1

Domain Name Service (DNS)

Question 2

Port 88

Answer 2

Kerberos

Question 3

Port 119

Answer 3

Network News Transfer Protocol (NNTP)

Question 4

Port 135

Answer 4

Remote Procedure Call (RPC)

Question 5

Port 137-139

Answer 5

NetBIOS

Question 6

Port 143

Answer 6

Internet Message Access Protocol (IMAP)

Question 7

Port 161

Answer 7

Simple Network Management Protocol (SNMP)

Question 8

Port 389

Answer 8

Lightweight Directory Access Protocol (LDAP)

Question 9

Port 445

Answer 9

Server Message Block (SMB)

Question 10

Port 465/587

Answer 10

SMTP with SSL/TLS

Question 11

Port 514

Answer 11

Syslog

Question 12

Port 636

Answer 12

LDAP SSL/TLS

Question 13

Port 860

Answer 13

iSCSI

Question 14

Port 989/990

Answer 14

File Transfer Protocol Secure (FTPS)

Question 15

Port 993

Answer 15

IMAP4 with SSL/TLS

Question 16

Port 995

Answer 16

POP3 (SSL/TLS)

Question 17

Port 1443

Answer 17

Microsoft SQL server (Ms-sql-s)

Question 18

Port 1645/1646

Answer 18

RADIUS (alternative)

Question 19

Port 1701

Answer 19

Layer 2 Tunnel Protocol

Question 20

Port 1723

Answer 20

Point-to-Point Tunneling Protocol (PPTP)

Question 21

Port 1812/1813

Answer 21

RADIUS

Question 22

Port 3225

Answer 22

Fibre Channel IP (FCIP)

Question 23

Port 3260

Answer 23

iSCSI Target

Question 24

Port 3389

Answer 24

Remote Desktop Protocol (RDP)

Question 25

Port 3868

Answer 25

Diameter (Replacement for RADIUS)

Question 26

Port 6514

Answer 26

Syslog over TLS

Question 27

Port 21

Answer 27

File Transfer Protocol (FTP)

Question 28

Port 22

Answer 28

SSH, SCP, SFTP

Question 29

Port 23

Answer 29

Telnet

Question 30

Port 25

Answer 30

Simple Mail Transfer Protocol

Question 31

Port 69

Answer 31

Trivial FTP (TFTP)

Question 32

Port 80

Answer 32

HTTP

Question 33

Port 110

Answer 33

Post Office Protocol v3 (POP3)

Question 34

Port 162

Answer 34

SNMPTRAP

Question 35

Port 443

Answer 35

HTTPS