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Public DNS server behine UTM9

IanCollins
Hi,

I have a secondary DNS server behine UTM9.

I have an additional IP address added to the public interface
I have a SNAT rule for any - dns - public IP to internal DNS server IP
I have a DNAT rule Internal DNS IP - DNS - Any to public IP of DNS server
I have FW rule any - DNS - internal DNS IP

The server responds internally to UDP and TCP
Externally it only responds on TCP

I dont see any dropped packets and the NAT rlle that is set to log initial packets does not log anything for UDP, only TCP.

What am i missing?  Can anyone suggest what i have done wrong?

Thanks

Ian...


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  • 0
    Hi,

    Attached are the 3 DNS services (the TCP and UDP that I created and the combined standard service) and the 2 inbound FW rules.

    I created a UDP and TCP rule separately to test.

    TCP works but UDP doesn't.

    Thanks
    Ian...

    FW1.PNG

    FW2.PNG

    DNS1.PNG

    dns2.PNG

    dns3.PNG
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  • 0
    Hi,

    Attached are the 3 DNS services (the TCP and UDP that I created and the combined standard service) and the 2 inbound FW rules.

    I created a UDP and TCP rule separately to test.

    TCP works but UDP doesn't.

    Thanks
    Ian...

    FW1.PNG

    FW2.PNG

    DNS1.PNG

    dns2.PNG

    dns3.PNG
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