I had ast week the situation that a user accidentally got our DNS server to its knees by sending over 270K DNS queries to our dnsmasq. I was looking for a reliable method to prevent this Happening in the future. Is there any way to do this with a procurve 8212zl? Or maybe directly on dnsmasq?
This is a simple diagram of the network and the vlans in the network
All the edge switches are HP procurve an not cisco. All Vlans are available on other HQ switches except vlan 10.100.100.0/24, which is available only on the core switch. All other Vlans are end user vlans depending on the department.