Port numbers

Question 1

Port 3389

Answer 1

used by the Remote Desktop Protocol

Question 2

Port 1521

Answer 2

Oracle database (multi-model database management system produced by Oracle)

Question 3

Port 1433

Answer 3

SQL

Question 4

Port 3306

Answer 4

MySQL (open-source relational database management system that uses SQL for database access)

Question 5

UDP Port 1812 and 1813

Answer 5

RADIUS

Question 6

TCP Port 49

Answer 6

TACACS+

Question 7

TCP port 20

Answer 7

FTP - Data transfer (File Transfer Protocol)

Question 8

TCP Port 21

Answer 8

FTP - File Transfer Protocol (Command control)

Question 9

TCP Port 22

Answer 9

SSH - Secure Shell. (Encrypted remote access)

Question 10

TCP port 23

Answer 10

Telnet (unsecure remote access)

Question 11

TCP port 25

Answer 11

SMTP - Simple Mail Transfer Protocol (Sending emails)

Question 12

TCP/UDP Port 53

Answer 12

DNS - Domains Name System (Resolves domains to IPs)

Question 13

UDP Port 67/68

Answer 13

DHCP - Dynamic Host Configuration Protocol (Assigns IP addresses)

Question 14

UDP Port 69

Answer 14

TFTP - Trivial File Transfer Protocol (Simple File Transfer)

Question 15

TCP Port 80

Answer 15

HTTP - Hypertext Transfer Protocol (Web traffic)

Question 16

UDP Port 110

Answer 16

POP3 - Post Office Protocol (Receiving emails)

Question 17

UDP Port 123

Answer 17

NTP - Networking Timing Protocol (Synchronizing time)

Question 18

TCP port 143

Answer 18

IMAP - Internet Message Access Protocol (Managing emails)

Question 19

UDP port 161/162

Answer 19

SNMP - Simple Network Management Protocol (Network monitoring)

Question 20

TCP/UDP Port 389

Answer 20

LDAP - Lightweight Directory Access Protocol (Directory Services)

Question 21

TCP port 443

Answer 21

HTTPS - Hypertext Transfer Protocol Secure (encrypted web traffic)

Question 22

TCP port 445

Answer 22

SMB - Server Message Block (fire sharing on windows)

Question 23

TCP Port 3389

Answer 23

RDP - Remote Desktop Protocol (Windows remote access)