CompTIA A+ Exam - Port Memorization

What is a non-ephemeral port?

SERVER APPLICATION PORT NUMBER. A permanent port number assigned to an established service, usually on a server or service. Usually numbers 0 through

1,023.

What is an ephemeral port?

CLIENT PORT NUMBER. A temporary port number determined in real time by the client. Port numbers 1,024 through 65,535.

What are the FTP - File Transfer Protocol - ports?

tcp/20 (active mode data) and tcp/21 (control)

What is the port for SSH - Secure Shell?

tcp/22

What is the port for Telnet?

tcp/23

What is the port for SMTP - Simple Mail Transfer Protocol?

tcp/25

What is the port for DNS - Domain Name System?

udp/53

What are the ports for DHCP - Dynamic Host Configuration Protocol?

udp/67 (server) and udp/68 (client)

What is the port for HTTP - Hypertext Transfer Protocol?

tcp/80

What is the port for HTTPS - Hypertext Transfer Protocol Secure?

tcp/443

What is the port for POP3 - Post Office Protocol Version 3?

tcp/110

What is the port for IMAP4 - Internet Message Access Protocol V4?

tcp/143

What is the port for NetBIOS name services - nbname?

udp/137

What is the port for NetBIOS session service - nbsession?

tcp/139

What is the port for SMB - Server Message Block? - AKA Common Internet File System - CIFS.

tcp/445

What is the port for LDAP/LDAPS - Lightweight Directory Access Protocol/Secure?

tcp/389

What is the port for RDP - Remote Desktop Protocol?

tcp/3389