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Forum Discussion
FVS318G V2 DNS traffic getting through
Hi.
I'm having an Issue with an FVS318G V2. I have only ping and port 8000 open for a specific address and all other traffic Is blocked but DNS requests are managing to get through.
Is this even possible ? Could a virus/malware somehow pull this off and bypass the firewall ?
2 Replies
Do you have DNS proxy turned on in the FW?
Maybe your clients are sending their DNS requests to the FVS, the FVS will then forward them on to your ISP's DNS server (or whatever DNS server you've set up under WAN settings). I believe this makes it so that the DNS request is sent out by the FVS itself and thus bypasses the firewall.
But please note that the above is just a bit of a guess, I've not tested/confirmed this behaviour. Try turning off DNS proxy in your LAN settings or point the client's DNS server to something like 8.8.8.8 (google's DNS) and see if DNS requests are still going out.
Hello Reprovo,
Welcome to the community!
Can you post your firewall rules? I'd like to know the firmware version you are using. How long have you been having this issue?
Thanks,
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