How to prevent the DHCP server serving unwanted users

dhcp

I am running DHCP on server 2008 R2 on my virtual setup, but when i go out on the network with others i see that i give unwanted users DHCP adresses. How can I prevent that so only my clients get served?

edit: updated and thanks

Best Answer

Use DHCP reservations for those computers that you want served.

Furthermore, your scenario doesn't make a whole lot of sense. Could you add more info? Is your Server 2008 machine a VM? I don't see how going onto the internet would cause reservations to show up in your DHCP server. DHCP servers can only service the subnet that they are on, unless there are DHCP helpers on the network.

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