How can I prevent unauthorized laptops from using a network that uses DHCP for dynamic addressing?
This would have to be done using a mechanism other than DHCP. DHCP does not prevent other clients from using the addresses it is set to hand out nor can it distinguish between a computer’s permanent MAC address and one set by the computer’s user. DHCP can impose no restrictions on what IP address can use a particular port nor control the IP address used by any client. • What are the Gotcha’s? • A malicious user could make trouble by putting up an unofficial DHCP server. • The immediate problem would be a server passing out numbers already belonging to some computer yielding the potential for two or more “innocent bystander” nodes ending up with the same IP number. Net result is problems using the nodes, possibly intermittent of one or the other is sometimes turned off. • A lot of problems are possible if a renegade server manages to get a client to accept its lease offering, and feeds the client its own version of other booting parameters. One scenario is a client that loads its OS ove
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- How can I prevent unauthorized laptops from using a network that uses DHCP for dynamic addressing?
