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John - If your Sonicwall can be a DNS server, that would be a good solution
for the public network. Or perhaps add an ethernet interface on the public
network to a local DNS server to keep that traffic off your internal
network.

steve

On Thu, Nov 29, 2018 at 7:52 AM John Peters <[log in to unmask]> wrote:

> We have Consolidated as an ISP provider.  We have an EDIA circuit in a
> main hub  at NCUHS and then an ELAN in a spoke to each school.  We run
> wired, private WiFi and public WiFi VLANS.  We have been having devices
> connecting to public WiFi use public DNS servers when we distribute DHCP
> addresses.  For the past week we have had very poor service.  I have been
> investigating UDP and TCP floods.  I also removed all protections except
> Content Filtering from the Firewall, to no avail.  In addition, two of our
> schools were completely offline yesterday due to power outages.   I am
> going to be testing circuits with Consolidated later this morning.
>
>
>
> Does anyone have any suggestions or recommendations on where I should look?
>
>
>
> Thanks
>
>
>
> *John Peters*
>
> *Director of Technology*
>
> *North Country Supervisory Union*
>
> *121 Duchess Ave Suite A*
>
> *Newport, VT 05855*
>
> *(802)334-5847 ext 2018*
>
> *[log in to unmask] <[log in to unmask]>*
>
>
>
> *"One person can make a difference and everyone should try." ~ John
> F. Kennedy*
>
>
>
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