1.5 TCP/UDP Port Numbers to Protocols

Question 1

File Transfer Protocol (FTP) active mode

Answer 1

TCP 20

Question 2

File Transfer Protocol (FTP) Control

Answer 2

TCP 21

Question 3

Secure Shell (SSH)

Answer 3

TCP 22

Question 4

Secure File Transfer Protocol (SFTP)

Answer 4

TCP 22

Question 5

Telnet

Answer 5

TCP 23

Question 6

Simple Mail Transfer Protocol (SMTP)

Answer 6

TCP 25

Question 7

Domain Name System (DNS)

Answer 7

UDP/TCP 53

Question 8

Dynamic Host Configuration Protocol (DHCP)

Answer 8

UDP 67/UDP 68

Question 9

Trivial File Transfer Protocol (TFTP)

Answer 9

UDP 69

Question 10

Hypertext Transfer Protocol (HTTP)

Answer 10

TCP 80

Question 11

Post Office Protocol v3 (POP3)

Answer 11

TCP 110

Question 12

Network Time Protocol (NTP)

Answer 12

UDP 123

Question 13

Internet Message Access Protocol (IMAP)

Answer 13

TCP 143

Question 14

Simple Network Management Protocol (SNMP) transfers mode

Answer 14

UDP 161

Question 15

Simple Network Management Protocol (SNMP) alerts mode

Answer 15

UDP 162

Question 16

Lightweight Directory Access Protocol (LDAP)

Answer 16

TCP 389

Question 17

Hypertext Transfer Protocol Secure (HTTPS) [Secure Sockets Layer (SSL)

Answer 17

TCP 443

Question 18

HTTPS [Transport Layer Security (TLS)

Answer 18

TCP 443

Question 19

Server Message Block (SMB)

Answer 19

TCP 445

Question 20

Syslog

Answer 20

UDP 514

Question 21

SMTP(Simple Mail Transfer Protocol) TLS[Transport Layer Security]

Answer 21

TCP 587

Question 22

Lightweight Directory Access Protocol (over SSL) (LDAPS)

Answer 22

TCP 636

Question 23

IMAP over SSL

Answer 23

TCP 993

Question 24

POP3 over SSL

Answer 24

TCP 995

Question 25

Structured Query Language (SQL) Server

Answer 25

TCP 1433

Question 26

SQLnet

Answer 26

TCP 1521

Question 27

MySQL

Answer 27

TCP 3306

Question 28

Remote Desktop Protocol (RDP)

Answer 28

TCP 3389

Question 29

Session Initiation Protocol (SIP)

Answer 29

TCP 5060/TCP 5061

Question 30

Internet Control Message Protocol (ICMP) -

Answer 30

A basic communication protocol, usually used by network devices, including routers, to send error messages and operational information

Question 31

TCP -

Answer 31

Connection-oriented, A formal connection setup and close. “Reliable” delivery,

Question 32

UDP –

Answer 32

Connectionless, No formal open or close to the connection. “Unreliable” delivery

Question 33

Generic Routing Encapsulation (GRE) -

Answer 33

Creates a tunnel between two IP endpoints, making them appear to be directly connected. No encryption.

Question 34

Internet Protocol Security (IPSec) -

Answer 34

A VPN protocol. Provides encryption and security of data over OSI layer 3.

Question 35

Authentication Header (AH) in IPSec -

Answer 35

Includes a hash of the IP packet and a shared key.

Question 36

Encapsulating Security Payload (ESP) in IPSec -

Answer 36

Encrypts the packet. Adds a header, trailer, and an Integrity Check Value.