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Thiyagu_343098's avatar
Thiyagu_343098
Icon for Nimbostratus rankNimbostratus
Jun 14, 2018

TACACS configuration on F5 LTM

Hello All, I'm working on the TACACS configuration on LTM. I do not want to lockout of my access of LTM because of any issue with TACACS authentication issues after enabling TACACS on LTM.   Could...
application delivery
BIG-IP
LTM
AceDawg_204810's avatar
AceDawg_204810
Icon for Cirrus rankCirrus
Jun 14, 2018

To the best of my knowledge, the F5 does not revert to the local user db in the event tacacs or radius servers are offline. The only exception to this rule is the built in admin account.

 

  • Thiyagu_343098's avatar
    Thiyagu_343098
    Icon for Nimbostratus rankNimbostratus
    Jun 15, 2018

    Hi Ace, on accout of TACACS not responding then the user can use the local authentication ( admin account to login)

     

    Could you please help me to know how I can set it up in this method?

     

    in addition I also want to rest the root user password.

     

    Could you also help me to reset root user password?

     

    Regards, Thiyagu

     

  • AceDawg_204810's avatar
    AceDawg_204810
    Icon for Cirrus rankCirrus
    Jun 15, 2018

    That is the default behavior of the F5. If tacacs or radius have been configured for management authentication, the F5 will use those methods first. Whether the tacacs or radius servers are online or offline, the local admin (GUI) and root (cli) accounts can always be used to access the system.

     

    To reset your root password, use the following article. You must have console access to the appliance.

     

    https://support.f5.com/csp/article/K13121