Protocols: FTP, TFTP, SFTP, SMTP, POP3 and IMAP

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Protocols: FTP, TFTP, SFTP, SMTP, POP3 and IMAP

Protocols, FTP, TFTP, SFTP, SMTP, POP3 an IMAP

This lesson focuses on ports that use the TCP and UDP communications protocol.  This lesson discusses the following protocols:

File Transfer Protocol (FTP): This is a TCP protocol and there is no encoding or overhead, it is insecure.

Trivial File Transfer Protocol (TFTP): This is a UDP protocol which allows us to send to multiple clients at once.

Secure File Transfer Protocol (SFTP): This is a TCP protocol that encrypts with Secure Shell (SSH) and is more secure than FTP.

This lesson also discusses the following mail protocols:

  • Simple Mail Transfer Protocol (SMTP): Uses TCP; e mail between servers and from Outlook.
  • Post Office Protocol 3 (POP3): Uses TCP; e mail comes from client download from server. Typically copies and deletes.
  • IMAP: uses TCP, downloads from server to client and keeps a copy of the message on the server, it has more configuration ability than a POP3.
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