Network+ Ports

• What does FTP stand for?

  File Transfer Protocol
• What ports does FTP use?

  20 and 21
• What is FTP used for?

  Provides insecure file transfers
• What does SSH stand for?

  Secure Shell
• What port does SSH use?

  22
• What is SSH used for?

  Provides secure remote control of another machine using a text-based environment
• What does SFTP stand for?

  Secure File Transfer Protocol
• What port does SFTP use?

  22
• What is SFTP used for?

  Provides secure file transfers
• What port does Telnet use?

  23
• What is Telnet used for?

  Provides insecure remote control of another machine using a text-based environment
• What does SMTP stand for?

  Simple Mail Transfer Protocol
• What port does SMTP use?

  25
• What is SMTP used for?

  Provides the ability to send emails over the network.
• What does DNS stand for?

  Domain Name Service
• What port does DNS use?

  53
• What is DNS used for?

  Converts domain names to IP addresses, and IP addresses to domain names
• What does DHCP stand for?

  Dynamic Host Control Protocol
• What ports does DHCP use?

  67 and 68
• What is DHCP used for?

  Automatically provides network parameters to your clients, such as their assigned IP address, subnet mask, default gateway, and the DNS server they should use.
• What does TFTP stand for?

  Trivial File Transfer Protocol
• What port does TFTP use?

  69
• What is TFTP used for?

  Used as a lightweight file transfer method for sending configuration files or network booting of an operating system
• What does HTTP stand for?

  Hypertext transfer Protocol
• What port does HTTP use?

  80
• What is HTTP used for?

  Used for insecure web browsing
• What does POP3 stand for?

  Post Office Protocol 3
• What port does POP3 use?

  110
• What is POP3 used for?

  Used for receiving incoming emails.
• What does NTP stand for?

  Network Time Protocol
• What port does NTP use?

  123
• What is NTP used for?

  Used to keep accurate time for clients on a network.
• What does NetBIOS stand for?

  Network Basic Input/Output System
• What port does NetBIOS use?

  139
• What is NetBIOS used for?

  Used for file or printer sharing in a Windows network.
• What does IMAP stand for?

  Internet Message Access Protocol
• What port does IMAP use?

  143
• What is IMAP used for?

  A newer method of email retrieval and storage which improves upon the older POP3.
• What does SNMP stand for?

  Simple Network Management Protocol
• What ports does SNMP use?

  161 (UDP) and 162 (UDP)