SSH possible on Windows systems?

[knguyen]

Thanks to Developers for OpenBSD ,WinSSHD, and Putty come together to create a solution that is indeed possible. SSH protocol version 1.3, 1.5 and 2.0 are supported and features you would expect to get from ssh on a linux machine.

One service that is used very often is the remote console. To provide this service, a channel is created in the SSH session, and the channel is used to exchange data using a terminal emulation protocol such as vt100 or xterm.

Another very popular service is port forwarding, or TCP/IP connection tunneling. With SSH port forwarding, it is possible to secure a TCP/IP connection established by an independent application that would otherwise be vulnerable to network attacks.

Different services through ssh channels include SCP SFTP and Exec Request.

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OpenSSH can be used by downloading the portable version and
Cygwin linux enviroment on windows files at
Cygwin Information and Installation

More info about OpenSSH
OpenSSH

WinSSHD is a packaged install and has shareware available, selling licenses for 39.95.
Tunnelier is a ssh client similar to putty and made by bitvise and license is not needed if for personal use, as well as for individual commercial use
inside organizations. Has same features as putty and adds
* graphical SFTP file transfer;
* single-click Remote Desktop tunneling;
* auto-reconnecting capability;
* dynamic port forwarding through an integrated proxy;
* an FTP-to-SFTP protocol bridge.

More info about WinSSHD
Home Page (Bitvise)

Putty can be used on windows to connect to ssh server.
PuTTY Download Page
Here are the PuTTY files themselves:
* PuTTY (the Telnet and SSH client itself)
* PSCP (an SCP client, i.e. command-line secure file copy)
* PSFTP (an SFTP client, i.e. general file transfer sessions much like FTP)
* PuTTYtel (a Telnet-only client)
* Plink (a command-line interface to the PuTTY back ends)
* Pageant (an SSH authentication agent for PuTTY, PSCP and Plink)
* PuTTYgen (an RSA and DSA key generation utility).

More info about Putty
PuTTY: a free telnet/ssh client