09-21-2016 08:27 AM - edited 09-21-2016 08:28 AM
we need to configure our infoblox devices to reply to unknown DNS queries before 5 secons. We have been navagating throught the different options but we can not find it.
Do you know if it is possible?
Thanks in advance!
09-21-2016 02:41 PM
It sounds like you have misconfigured something, it should respond much faster than that.
Either you are forwarding queries to a server that is unreachable or your system is unable to contact the root servers on the Internet.
If either the above is true and you can't fix it, then the easiest/fastest approach is to define an internal root domain. Simply define a new zone called "." (no quotes) and then it will respond to any unknown queries with NXDOMAIN. Note that this will also prevent resolving Internet names.
PCN (UK) Ltd
All opinions expressed are my own and not representative of PCN Inc./PCN (UK) Ltd. E&OE
09-22-2016 11:53 PM
Hi @paulr, thanks for your reply.
yes, this Infoblox has no access to internet and is not forwarding querires.
In our test, we have noticed that the delay is about 16 seconds qhen we querie for a unknown fwdn. And customer systems needs that the reply must be less than 5 seconds.
I think that your solution about root domain will be the better for us.
We will try it.
09-22-2016 11:55 PM
Thanks @GHorne, for your reply.
I think that idea is nice too. We will check it.