Ports

Question 1

Port 21: FTP

Answer 1

TCP, (file transfer protocol)

Used to transfer files from host to host

Question 2

Port 22: SSH, scp, SFTP

Answer 2

TCP:

Secure remote terminal access and file transfer capabilities

Secure copy functions

Secure file transfers

Question 3

Port 23 Telnet

Answer 3

TCP:

Provides insecure remote control of another machine using text based environments

Question 4

Port 25: SMTP

Answer 4

TCP: Simple Mail Transfer Protocol

Send emails over network

Question 5

Port 53: DNS

Answer 5

TCP/udp: Domain Name System

Translate domain names to IP addresses

Question 6

Port 69 TFTP

Answer 6

UDP, Trivial File Transfer Protocol

Lightweight file transfer method for sending configuration files or network booting of an OS

Question 7

Port 80 http

Answer 7

TCP Hypertext transfer protocol

Insecure web browsing

Question 8

Port 88 Kerberos

Answer 8

UDP

Network authentication protocol

Question 9

Port 110 POP3

Answer 9

TCP Post office protocol V3

Retrieving email from server

Question 10

Port 119 NNTP

Answer 10

TCP Network news transfer protocol

Accessing newsgroups

Question 11

Port 135 rpc

Answer 11

TCP/udp: remote procedure call

Facilitates communication between different system processes

Question 12

Port 137, 138, 139: netBIOS

Answer 12

TCP/ udp

Network protocol suite

Question 13

Port 143 IMAP

Answer 13

TCP internet message access protocol

allow access to email messages on a server

Question 14

port 161 smp

Answer 14

udp simple network management protocol

manage network devices

Question 15

port 162 snmp trap

Answer 15

udp

sending snmp trap messages

Question 16

port 389 ldap

Answer 16

lightweight directory added protocol. tcp

facilitates directory services

Question 17

port 443 https

Answer 17

tcp http secure

provides secure web communication

Question 18

port 445 smb

Answer 18

tcp server message block

file and printer sharing over a network

Question 19

port 465 and 587 smtps

Answer 19

tcp smtp secure

secure smtp communication

Question 20

port 514 syslog

Answer 20

udp.

used for sending log messages

Question 21

port 636 ldap secure

Answer 21

tcp

ldap communication over ssl/tls that is encrypted

Question 22

port 993 imaps

Answer 22

tcp: internet message access protocol over ssl/tls

secure email retrieval

Question 23

port 995 pop3s

Answer 23

tcp: pop3 over ssl/tls

used for secure email retrieval

Question 24

port 1433 microsoft sql

Answer 24

tcp

facilitate communication with microsoft sql server

Question 25

port 1645, 1646 radius

Answer 25

tcp: tcp version of radius

remote authentication, authorization and accounting

Question 26

port 1812, 1813 radius udp

Answer 26

udp: radius udp

authentication, authorization and accounting as defined by the internet engineering task force (IETF)

Question 27

port 3389 rdp

Answer 27

tcp: remote desktop protocol

remote desktop access

Question 28

port 6514 syslog tls

Answer 28

tcp:
secure syslog that uses ssl/tsl to encrypt the ip packets using a certificate before sending them across the ip network to the syslog collector