OpenSSH/PuTTY/SSH

License / Price: Freeware
Version: 3.81
Language: English
File size: 2.29MB
Developer: OpenBSD
OS: Windows/Unix/Mac
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OpenSSH/PuTTY/SSH

OpenSSH/PuTTY/SSH  is the now ubiquitous program for logging into or executing commands on a remote machine. It provides secure encrypted communications between two untrusted hosts over an insecure network, replacing the hideously insecure telnet/rlogin/rsh alternatives.

Most UNIX users run the open source OpenSSH server and client. Windows users often prefer the free PuTTY client, which is also available for many mobile devices, and WinSCP.

Other Windows users prefer the nice terminal-based port of OpenSSH that comes with Cygwin. There are dozens of other free and proprietary clients to consider as well.

Uses

 

  • For login to a shell on a remote host (replacing Telnet and rlogin)
  • For executing a single command on a remote host (replacing rsh)
  • For setting up automatic (passwordless) login to a remote server (for example, using OpenSSH[23])
  • Secure file transfer
  • In combination with rsync to back up, copy and mirror files efficiently and securely
  • For forwarding or tunneling a port (not to be confused with a VPN, which routes packets between different networks, or bridges two broadcast domains into one).
  • For using as a full-fledged encrypted VPN. Note that only OpenSSH server and client supports this feature.

 

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