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Forum Discussion
Open recursive resolver
Hi. I have a FVS336GV2 but I have received the following email from our ISP, what do you advise? Hello, You appear to be running an open recursive resolver at IP address 78.XXX.XXX.XXX that p...
OK. So I got the call to say that the site no longer has internet access which I knew was the change I made, this was confirmed when I un-did the change and everything started working.
So I made a change to the firewall, under inbound traffic I blocked DNS:UDP port 53. If my understanding is correct this should have the desired affect, does this sound and look right to you guys??
I am also curious about the other rules in there as it wasn't me that added them and they look very open to me, what are your thoughts?
So I made a change to the firewall, under inbound traffic I blocked DNS:UDP port 53. If my understanding is correct this should have the desired affect, does this sound and look right to you guys??
I am also curious about the other rules in there as it wasn't me that added them and they look very open to me, what are your thoughts?
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