In DHCP world, a Rogue DHCP server can be plugged to the Network.
* However what is the worst case scenario that can happen, other than Denial of Service attack, seeing that the Rogue DHCP server can hand out wrong TCP/IP settings :IP address/Default Gateway/DNS ?
*To prevent that DHCP Snooping can be configured on Switches. It needs to be configured at the global configuration then on the Vlan(s).
I am not sure if it needs to be configured on all Vlans on all Switches ?
Any clarifications ?