src/LdapAuthUserProvider.php
public function validateCredentials(Authenticatable $user, array $credentials)
    {
        return $this->ldap->auth(
            $user->dn,
            $credentials['password']
        );
    }
public function validateCredentials(Authenticatable $user, array $credentials)
    {
        return $this->ldap->auth(
            $user->dn,
            $credentials['password']
        );
    }
Validate a user against the given credentials.

@param  \Illuminate\Contracts\Auth\Authenticatable $user
@param  array $credentials
@return bool