Id like to discus one issue related to DHCP spoofing.
We have all over our network Cisco
switches with one L3 switch moving DHCP requests from one
network to other network where
is our DHCP server. So we have
configured ip helper-address on interface.
But when someone plug into client?s network DHCP server than
clients will take the IP addresses from this server.
So my question is, how to configure Cisco switches or LAN not to be harmful with other DHCP
server pluged on network? But still request IP addresses from only one DHCP server.