Dear Members,

I have 2 DNS Servers.

I would like to force all DNS request port 53 UDP/TCP to these 2 DNS Servers IP.

I could use the regular DS-NAT but it is only capable to forward to 1 IP address.

May I know what is the best way to do this?

what DNS have your client?

force packet with dst = 8.8.8.8 or first OpenDNS, to one,

all the other dst = 8.8.4.4 or second OpenDNS to the other,

and chose one of the two for all other unknow DNS server.

Dear Rex,

Client as using different type of DNS servers thus we are not able to use the mentioned rule

Dear Rex,

Client as using different type of DNS servers thus we are not able to use the mentioned rule

Sorry, but at this point, you can not do that.

I remember that I saw on this forum description how to redirect dns requests from inner network going outside to own or specific dns server. Search a bit. You can also drop all these requests and suggest to your clients to set your dns servers only. If client makes tunnel, you are out of the game anyway.

The user ask how to redirect two DNS, not one...

>>>...
>>>have 2 DNS Servers.
>>>I would like to force all DNS request ... to these 2 DNS Servers...
>>>...

If he drops forwarding port 53 going to wan, he forces his clients to set his DNS servers. Clients can set both... so what is the difference?

If he drops forwarding port 53 going to wan, he forces his clients to set his DNS servers. Clients can set both... so what is the difference?

Sorry I'm not english and is hard for me explain.

I try with this (as I have understand):

WITHOUT FORCE USERS TO CHANGE DNS1 and DNS2

The user want than his two DNS server must be used BOTH by all users (without split user for dns used, ip, etc.)

Like DNS1 specified on user device (no matter what address is) go to his DNS1
and DNS2 specified on user device (no matter what address is) go to his DNS2



For me is absurd and impossible to do, do you think also that?