Allied Telesis AT-S63 - Manual (Page 424)

Chapter 36: Secure Shell (SSH)
424 Section IX: Management Security
SSH Clients
The SSH protocol provides a secure connection between the switch and
SSH clients. After you have configured the SSH server, you need to install
SSH client software on your management PC. The AT-S63 Management
Software supports both SSH1 and SSH2 clients.
You can download client software from the Internet. Two popular SSH
clients are PuTTY and CYGWIN. To install SSH client software, follow the
directions from the vendor.
After you have configured the SSH client software, you can use the client
software to log in to the SSH server on the switch to start either a manager
or operator management session. The SSH server can support up to one
manager session and eight operator sessions at one time.