Accessing the IBM p575 Cluster (hydra) Remotely

Last update on Tuesday, 05-Jun-2007 12:31:15 CDT.

Users must use an SSH client to log in to hydra. Unencrypted methods such as telnet, rlogin, and XDM are no longer allowed for accessing any of our machines. SSH (Secure SHell) clients provide essentially the same functionality as telnet clients but encrypt network traffic between the user's machine and the remote machine.

Accessing hydra from UNIX based machines

If you are using a UNIX based system (IRIX, Linux, SunOS, etc) you will typically need to type the following command from a shell terminal:

ssh yourusername@hydra.tamu.edu

...where yourusername is your hydra account username. You will then be prompted for your hydra account password in order to establish the connection.

If, however, you are connecting for the very first time, you will see a message similar to the following, before arriving at the password prompt:

The authenticity of host 'hydra (165.91.16.24)' can't be established.
RSA key fingerprint is f0:3e:2d:95:1b:56:b8:cb:6c:a5:92:1b:cd:1b:bf:92.
Are you sure you want to continue connecting (yes/no)?

Type yes and you will then be presented with the password prompt.

Warning: Permanently added 'hydra.tamu.edu,165.91.16.24'
(RSA) to the list of known hosts.
yourusername@hydra.tamu.edu's password:

Although SSH is now in widespread use, an SSH client may not be installed by default on your system. Consult our SSH Clients page to see how you can obtain a free SSH client off the web.

Click here for more information on using SSH from your UNIX workstation.

Accessing hydra from Windows based machines

If you are a Windows user, you will need to install and use the PuTTY software to access hydra. Consult our SSH Clients page to see how you can obtain PuTTY off the web. Then visit our SSH Client for Windows page to learn how to use PuTTY to establish a connection with hydra.