• To log into Fermilab machines you will need a kerberos ticket.
• You can check to see if you already have a ticket by typing klist.
• If you do not have a Kerberos ticket you can get one by typing "kinit username@FNAL.GOV", where username is your username, and enterring your password. You are only allowed to do this at the machine you are directly logged into, never on a machine you got to via telnet or rsh, or you will expose your kerberos password and computer security will demand that you change it.
• You can then login to another Fermilab machine with "telnet -F", rsh or ssh.
• Your ticket should then be forwarded to that machine, you can check with klist again.
• On fcdflnx3 as user cdfopr you can type "ticket" to get a valid ticket for user cdfopr
• For writing to the CVS repository you will need a kerberos ticket.
• On the online PCs in the CDF control room, like b0dap18.fnal.gov the offline shift machine, when you log in at the terminal you unfortunately get a kerberos ticket that CANNOT be forwarded. When logged into this machine at the console, you will need to do a kinit to get a kerberos ticket that CAN be forwarded. You should, of course, only do this if you are directly logged into the machine at the console, not connected to it via rsh or telnet, or you will expose your kerberos password.