Mac addess is change in every hop and also user using LDAP so how it's possible to using block list.
Moreover Or suggest me how to restrict few pc or users id not to login from any other system except specify the whitelisted pc which suppose to login using provided vpn id, is this a way to control through HIPS?
Global Protect assigns a unique Host ID to identify each host. This ID value varies depending on the device type.
The document on my first comment will show you how to find this Host ID, however, it's still a Block List.
If you want to allow just a few workstations, have you considered using certificates? You can create a root CA on the Paloalto and use it to create device certificates. This will be alongside your existing authentication method, in this case, LDAP.
You can also distribute the certificates via a Group Policy.
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