Answer :
When setting up LDAP authentication on a client machine, it is necessary to reconfigure a service to enable the login service to validate users against the LDAP service.
The service that needs to be reconfigured is the Pluggable Authentication Module (PAM) service. PAM is a security mechanism used on Linux systems to authenticate and authorize users. By default, PAM is configured to use local authentication, which means that it will check the local password file for user authentication. However, to enable LDAP authentication, PAM must be reconfigured to use LDAP as the authentication source. Therefore, to set up LDAP authentication on a client machine, the PAM service needs to be reconfigured to validate users against the LDAP service. This can be done by modifying the PAM configuration files to include LDAP authentication modules. Once this is done, users can log in to the client machine using their LDAP credentials.
To learn more about LDAP, visit:
https://brainly.com/question/12972367
#SPJ11