Allied Telesis AT-S63 - Manual (Page 484)

Chapter 40: Secure Shell (SSH)
484 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 workstations. 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.