Large amount of DNS Requests causing vpn to dropout?
We have been having a number of problems with users being kicked out of the vpn connection lately. Upon investigating this I have found loads of requests on the Watchguard firewall making DNS requests out to the internet. Around 200 per DNS server at once.
I can only assume that this is the reason users are getting dropped off and assume that this is some sort of DNS attack. Any ideas how to tackle this?