Ports And Protocols

Question 1

Port 80

Answer 1

Protocol - HTTP

(Insecure web browsing)

Question 2

Port 20 and 21

Answer 2

FTP - insecure fill transfer

Question 3

Port 22

Answer 3

Protocol SSH - secure non GUI remote desktop

Question 4

Port 23

Answer 4

Protocol Telnet - insecure non GUI remote desktop

Question 5

Port 25

Answer 5

Protocol SMTP - simple mail transfer - email sending

Question 6

Port 53

Answer 6

Protocol DNS - Domain Name system - translates IP to URL and vice versa

Question 7

Port 67, 68

Answer 7

Protocol DHCP - Dynamic Host Configuration Protocol - local service that configured IP, Subnet, and Gateway for devices

Question 8

Port 69

Answer 8

Protocol TFTP - Trivial File Transfer Protocol - file transfer that is typically used for config changes and upgrades to software and firmware.

Question 9

Port 110

Answer 9

Protocol POP3 - older protocol used to receive incoming email.

Question 10

Port 123

Answer 10

Protocol NTP - Network Time Protocol - sync device time with internet time.

Question 11

Port 137, 138, 139

Answer 11

Protocol NetBios - interconnection of Windows machines.

Question 12

Port 143

Answer 12

Protocol IMAP - Internet Mail Application Protocol - newer service used for incoming email.

Question 13

Port 179

Answer 13

Protocol BGP - Border Gateway Protocol - used by ISP to maintain large routing tables

Question 14

Port 389

Answer 14

Protocol LDAP - Lightweight Directory Access Protocol - provides a mechanism of accessing and maintaining distributed directory info.

Question 15

Port 443

Answer 15

Protocol HTTPS - Hypertext Transfer Protocol over SSL/TLS - secure connection internet browsing

Question 16

Port 636

Answer 16

Protocol LDAPS - Lightweight Directory Access Protocol over TLS/SSL - secure LDAP I.e directory services

Question 17

Port 989,990

Answer 17

Protocol FTP over TLS/SSL - secure FTP

Question 18

Port 161,162

Answer 18

Protocol SNMP - Simple Network Management Protocol - used for monitoring, configuring, and controlling network devices.

Question 19

Port 445

Answer 19

Protocol SMB - Server Message Block - used for windows file and print sharing services

Question 20

Port 514

Answer 20

Protocol Syslog - System Logging Protocol - used to sending login data back to a centralized server

Question 21

Port 587

Answer 21

Protocol SMTP TLS - Simple Mail Transfer Protocol Transport Layer Security - secure and encrypted version of SMTP

Question 22

Port 993

Answer 22

Protocol IMAP over SSL - Internet Message Access Protocol over SSL - secure and encrypted version of IMAP.

Question 23

Port 995

Answer 23

Protocol POP3 over SSL - secure POP3

Question 24

Port 1433

Answer 24

Protocol SQL - Structured Query Language Server Protocol - used for comms from a client to the database engine

Question 25

Port 1521

Answer 25

Protocol SQLnet - used for comms from a client to Oracle database

Question 26

Port 3306

Answer 26

Protocol MySQL - used for comms from a client to the MySQL database engine

Question 27

Port 3389

Answer 27

Protocol RDP - Remote Desktop Protocol provides GUI remotely control another computer

Question 28

Port 5060, 5061

Answer 28

Protocol SIP - Session Initiation Protocol - used to initiate VoIP and video calls

Question 29

Port 88

Answer 29

Protocol Kerberos - network auth for client server apps using secret -key cryptography.