Home > Storage > PowerScale (Isilon) > Product Documentation > Management and Migration > Dell PowerScale: Integrating OneFS with Kerberos Environment for Protocols > Phase 1: Getting the initial Ticket-Granting Ticket (TGT)
This phase is typically used at the initiation of a login session to get TGT from AS. As mentioned above, Kerberos uses TGT to authenticate Kerberos clients who are requesting access to other servers. The TGT will subsequently be used to request tickets for other servers without requiring further use of the client’s secret key.