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How NTP works for authentication

How NTP works for authentication: RHCE Cert Prep: Authentication with LDAP and Kerberos
How NTP works for authentication: RHCE Cert Prep: Authentication with LDAP and Kerberos

When authenticating via a network server, it's crucial that both the client and server have the same time. Network authentication protocols such as Kerberos and Google Authenticator require the authentication process to be short. This, in turn, requires the clocks to be synchronized. NTP is an intelligent protocol for doing this.

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