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Force DNS Exceptions
Posted: Mon May 23, 2011 3:04 pm
by Trailblazer
Hi Guys,
I would like to force everyone on the network to use the OpenDNS servers except for a few clients.
So I'll use 'Force Clients to use Router DNS Servers'. That works great and it's perfect for my purpose.
How do I allow just a few clients to use their own DNS servers (like me, for one)? I have added my IP and the DNS servers in the whitelist area of Exceptions, but the logic really isn't right and I didn't expect it to work there anyway.
Thanks!
Re: Force DNS Exceptions
Posted: Sat May 28, 2011 1:34 pm
by DoesItMatter
Change the DHCP range to be something like
192.168.1.51 -> 192.168.1.250
Then put the exception clients as Static IP's in the
192.168.1.11 -> 192.168.1.50 range.
BUT
Those Static IP's won't have quota tracking either.
Kind of a Catch-22 on that setup.
Re: Force DNS Exceptions
Posted: Mon Jun 06, 2011 9:03 pm
by z21
I did it this way:
On the Connection> Basic page leave "Alternate DNS" as "Allow clients to use alternate DNS servers", and enter the OpenDNS servers as the Custom DNS servers.
On the Firewall>Restrictions page add a new restriction for all hosts except the ones you want to allow external DNS. Set it to Remote Ports Block Only 53. This won't block clients from the router DNS, which will be using OpenDNS, but will prevent connecting to alternate DNS.
Re: Force DNS Exceptions
Posted: Tue Jun 07, 2011 11:27 am
by Trailblazer
Genius! Thanks!
Re: Force DNS Exceptions
Posted: Wed Jun 29, 2011 11:51 am
by Trailblazer
For those who might be interested, as Z21 states, this stops DNS access for clients with their own DNS servers defined in their IP stack.
On their machine, they appear to not be on the internet as all web addresses fail (that aren't using IP addresses).
For the machines that I want to use their own DNS servers (defined in their respective IP stacks), it works perfectly.
Thanks again, z21!
Re: Force DNS Exceptions
Posted: Mon Jul 25, 2011 5:18 am
by tunaleya
How do i get my primary and secondary dns numbers? im trying to set up a router and when im doing the installation it asks for the dns primary and secondary. I went to network connections and went to the dns settings and its blocked out unless u click use new dns settings and then u can type ur own. What the hell do i do im getting real frustrated.
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