Ports Section 1

Question 1

21 TCP

Answer 1

FTP

File Transfer Protocol is used to transfer files from host to host

Question 2

22 TCP/UDP

Answer 2

SSH, SCP, SFTP

Secure Shell is used to remotely administer network devices and systems. SCP is used for secure copy and SFTP for secure FTP.

Question 3

23 TCP/UDP

Answer 3

Telnet

Unencrypted method to remotely administer network devices (should not be used)

Question 4

25 TCP

Answer 4

SMTP

Simple Mail Transfer Protocol is used to send email over the Internet

Question 5

53 TCP/UDP

Answer 5

DNS

Domain Name Service is used to resolve hostnames to IPs and IPs to hostnames

Question 6

69 UDP

Answer 6

TFTP

Trivial FTP is used as a simplified version of FTP to put a file on a remote host, or get a file from a remote host

Question 7

80 TCP

Answer 7

HTTP

Hyper Text Transfer Protocol is used to transmit web page data to a client for unsecured web browsing

Question 8

88 TCP/UDP

Answer 8

Kerberos

Used for network authentication using a system of tickets within a Windows domain

Question 9

110 TCP

Answer 9

POP3

Post Office Protocol v3 is used to receive email from a mail server

Question 10

119 TCP

Answer 10

NNTP

Network News Transfer Protocol is used to transport Usenet articles

Question 11

135 TCP/UDP

Answer 11

RPC/DCOM-scm

Remote Procedure Call is used to locate DCOM ports that request a service from a program on another computer on the network

Question 12

137-139 TCP/UDP

Answer 12

NetBIOS

NetBIOS is used to conduct name querying, sending of data, and other functions over a NetBIOS connection

Question 13

143 TCP

Answer 13

IMAP

Internet Message Access Protocol is used to receive email from a mail server with more features than POP3