To reach a machine of the cray-cyber network you have to relay through the cray-cyber server (that just means that you first log on to the server and you will get a menu about which machine you want to log on to).

There are 2 possibilities to reach the server:
         - Open a secure shell (SSH) to login.cray-cyber.org (for a SSH client list, see http://www.freessh.org) - recommended
         - Open a telnet session to login.cray-cyber.org (Just enter telnet login.cray-cyber.org)
If you are only using guest access, telnet is OK, but if you login into your personal account, we recommend SSH because all data will be encrypted, and so it's (almost) impossible for a third party to read your password.

Access to the Cray-Cyber.org network is always free, donations are however welcome.
You can either obtain your own username (please see Access Request for more information), or use our guest account.
For more information on how to access the guest account, please see Obtaining the guest account password.
We recommend that you first try out our machines by using the guest account as this is less work for you and for us than obtaining your own account and you can access the guest account instantly without having to wait until your personal account is created, but when you want to use the machines more intensively and want to store your own files and so on, please obtain your own account.

After you logged on using one of the above methods you will be presented a menu, indicating which machine is up and which is not.
Just enter the number of the machine and you will be connected to that machine.
If you explicitly requested that feature, your non-guest account session is opened in a screen. For more information about this, please click here. If you connect to a UNIX machine, enter the same username and password that you were using on the login server, if you are using a guest account, enter guest when prompted for the username as well as when prompted for the password.
If you connect to a NOS machine, enter your username and password, or, as an alternative, use the guest accounts GUEST01-GUEST15.
See (*** UPDATED ***) logon information for the Cyber 960 for more NOS-specific logon information.
For NOS/VE specific information, see the NOS/VE users guide.
(*** UPDATED ***) Manuals for Cyber NOS and NOS/VE Editors

The NOS and NOS/VE Editors make extensive use of the VT100 Terminal Emulation function keys and shifted function keys. Thanks to Markus Mueller you may find here a description of the NOS Function Keys and NOS/VE Function keys

All connections made are established using the TCP/IP protocol (telnet)
There is only manual user synchronization on the NOS machines (when you change your password on the login server, it is not automatically updated on the Cyber)
Unix and users and passwords are updated with a self-made system. New accounts can take up to 20 minutes to show up (worst case).
If you want to change your password make sure you change it on the login server (for the UNIX-world) as changing it on the Cray will have no impact (only for a maximum of 20 minutes).

If you have problems using the machines, please first read the FAQ.
You could also think of posting to the Users-Mailinglist