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Renewing Tokens for AFS

Renewing Tokens for AFS. Preliminary Notes. Active UMBC (AFS) account exists for the user AFS accounts include access to systems such as gl.umbc.edu and umbc7.umbc.edu Non-AFS accounts include access to systems such as cs.umbc.edu and umbc2.umbc.edu (for which this procedure will NOT work!)

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Renewing Tokens for AFS

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  1. Renewing Tokens for AFS

  2. Preliminary Notes • Active UMBC (AFS) account exists for the user • AFS accounts include access to systems such as gl.umbc.edu and umbc7.umbc.edu • Non-AFS accounts include access to systems such as cs.umbc.edu and umbc2.umbc.edu (for which this procedure will NOT work!) • User has been logged on for 24+ hours

  3. Tokens • An ID • Contains user’s time stamp • Contains user’s life time • Keeps time records for the duration of a login session • Expires after 24+ hours

  4. When Tokens Expire… • To renew tokens: • At the UNIX command line prompt, type: • klog or kinit • Where: • klog - kernel error logging interface • kinit - kernel initiation • In this case, we will use kinit • User verification will be required via password

  5. Executing the Command

  6. “Run-away” or Unusual Processes • Make sure that no “run-away” or unusual process exist • This may be resulting in the token expirations • To retrieve a list of running processes • Type the following at the UNIX command prompt: • ps -fu <username>

  7. Executing the Command

  8. Purposes for Verifying Running Processes • To make sure a process has not been left running by mistake • To make sure no ‘unusual’ process exists • May suggest suspicious activity • Especially if user is logged in via ‘insecure’ TELNET!

  9. Troubleshooting

  10. Questions?

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