Port Numbers

Question 1

Files Transfer Protocol

Answer 1

TCP Port LAN 20/ WAN 21. Share files. Supports Authentication, Authorization and Directory Browsing.

Question 2

Secure File Transfer Protocol

Answer 2

TCP Port 22. FTP but Secure.

Question 3

Trivial File Transfer Protocol

Answer 3

UDP Port 69. Push and Pull to get files from servers. Commonly used to manage router and switches. Direct file transfer.

Question 4

Simple Mail Protocol

Answer 4

TCP Port 25. Sends outgoing mail to server.

Question 5

Post Office Protocol (POP3)

Answer 5

TCP Port 110. Downloads incoming mail from a server.

Question 6

Internet Message Access Protocol (IMAP)

Answer 6

TCP Port 143. Sync mails from server.

Question 7

Telnet

Answer 7

TCP Port 23. Provides Remote Command Line Access to interact with a server. more used in linux. Insecure.

Question 8

Secure Shell (SSH)

Answer 8

TCP Port 22. Encrypted remote command line access to interact with a server.

Question 9

Domain Name Service

Answer 9

TCP/UDP Port 53. Provides name to an IP address for host.

Question 10

Dynamic Host Configuration Protocol

Answer 10

UDP Port 67 for server, 68 for Client. Provides configurations to clients in an IP network via broadcast.

Question 11

HTTP

Answer 11

TCP Port 80.

Question 12

HTTPS

Answer 12

TCP Port 443.

Question 13

NetBIOS (Network Basic Input/Ouput System)

Answer 13

TCP Port. Provides network communication features in a windows network. was used in Windows before IP Networking. TCP/UDP Port 137/139.

Question 14

SNMP (Simple Network Management Protocol)

Answer 14

UDP Port 161/162. Queries, Configures, and Monitor host in a LAN. Ver 3 is encrypted.

Question 15

LDAP (Lightweight Directory Access Protocol)

Answer 15

TCP/UDP Port 389. Used in a domain based network environment to facilitate system and user management .

Question 16

Server Message Block (SMB)

Answer 16

TCP Port 445. File Sharing, Server Browsing and Printing services.