Unidentified RAS entries in DHCP Lease

Hi All,

We have a small network LAN with 25 Workstation running Win98 and Win2k Pro and Win2k Server. Recently I observed unidentified RAS entries in our DHCP server’s lease. I deleted these entries, but every time I restart the server I get this RAS entries again.

How do I get rid of these entries and what are these entries?

Is our net work being hacked?

Pls help…

Regards,

Minhaj