where do I find this plugin?

Is there any plugin which the player can only enter if you have his name on a list? Like a whitelist?

If you have what is the name of the plugin?
grateful :3

Rust has whitelisting by Steam group built in. The server owner designates a particular group in the whitelist, and Iif you’re not in the group, it kicks you on join. The group can be public joining or invite only, up to you.

Plugin questions belong in the Rust Modding subforum, too.