Using Secure Protocols

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Many old protocols are insecure

• FTP for transferring files
• Telnet for interacting with remote machines
• POP for retrieving email

Most protocols have secure equivalents:

• SSH for Telnet
• SFTP for FTP
  • based on SSH

SSH is a very useful protocol:

• can send many types of traffic over it
  • file transfers
  • terminal access
  • connecting remote desktop
  • communicating over VPN
  • mounting remote file systems