DNS requests originating from firewall?

Started by wewyweww, December 28, 2025, 06:53:00 AM

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Hello all,

I've hit a wall trying to understand what is going on.

I do not use the firewall for DNS or DHCP. However, when I do a DNS query from a client on the LAN, the originating IP address of the DNS request is the WAN IP on the WAN interface.

I have a rule on the LAN interface that should be blocking these DNS queries, but I do not see the LAN source address at all and is not being blocked.

Thanks folks!

Quote from: wewyweww on December 28, 2025, 06:53:00 AMI do not use the firewall for DNS or DHCP. However, when I do a DNS query from a client on the LAN, the originating IP address of the DNS request is the WAN IP on the WAN interface.
If we are talking IPv4 then all traffic is NAT-ed to the WAN IP, including DNS queries.
Deciso DEC740