Get hardware information from a database server

Question

I want to get hardware information from a database server, which may not be in my private network, like the network card's MAC address, or the CPU ID. It has to work on MS SQL and MySQL.

It is needed for some kind of Licensing Model and needs to work over ANY network connection. Something like a Hardware ID of the database server or some kind of serial of the DB Server software, which identifies this server uniquely.

Thanks

Dirk