Ports #1

Question 1

FTP Data (active mode)

Answer 1

TCP 20

Used for data in active mode

In passive mode a random TCP port is used for data.

Question 2

FTP Control Port

Answer 2

TCP 21

Control port stays the same in both active and passive mode.

Question 3

SSH
SCP
SFTP

Answer 3

TCP 22

<b>S</b>ecure <b>SH</b>ell
<b>S</b>ecure <b>C</b>o<b>P</b>y
<b>S</b>ecure <b>F</b>ile <b>T</b>ransfer <b>P</b>rotocol

Encrypts communications

Question 4

Telnet

Answer 4

TCP 23

Remote access

Sends data in cleartext and is therefore vulnerable to sniffing attacks

Question 5

SMTP

Answer 5

TCP 25

Simple Mail Transfer Protocol

Question 6

TACACS+

Answer 6

TCP 49

Terminal Access Controller Access Control System

TACACS+ developed by Cisco.

Based on TACACS but is a separate protocol

Question 7

DNS

Answer 7

Name queries UDP 53

Zone transfers TCP 53

Question 8

TFTP

Answer 8

UDP 69

Used to transfer small amounts of data

Vulnerable in nature, normally disabled

Question 9

HTTP

Answer 9

TCP 80

Question 10

Kerberos

Answer 10

UDP 88

An authentication protocol

Question 11

POP3

Answer 11

TCP 110

Post Office Protocol version 3

Question 12

SNMP

Answer 12

UDP 161

Simple network management protocol

Question 13

SNMP trap

Answer 13

UDP 162

<b>SNMP</b> trap is used to send error messages and notifications