Redirect main DNS quick help needed

IntraLink · Wed Apr 18, 2007 5:42 pm

What does the rule look like if I need to redirect all of my customer DNS entries at 208.63.0.2 to 216.43.23.5 using my MT border router?

IntraLink · Thu Apr 19, 2007 12:21 am

Nevermind, I figured it out.

sogaro · Thu Apr 26, 2007 7:28 am

Nevermind, I figured it out.

pls how did you do it? Prety urgent, thx.

IntraLink · Thu Apr 26, 2007 7:35 am

I used Winbox and set up a dst-nat on port 53 tcp and udp (mostly udp traffic) to the new IP and port 53.

Seems to work fine.

sogaro · Wed Jun 06, 2007 4:32 am

kindly write out the parameters, thanks.

IntraLink · Wed Jun 06, 2007 5:07 am

;;; DNS Redirect for External DNS Old to External DNS New Servers
     chain=dstnat dst-address=209.63.0.2 protocol=tcp dst-port=53 
     action=dst-nat to-addresses=216.194.124.21 to-ports=53

chain=dstnat dst-address=209.63.0.2 protocol=udp dst-port=53 
     action=dst-nat to-addresses=216.194.124.21 to-ports=53

Where 209.62.0.2 is the old DNS that your clients might have in their routers/computers and 216.194.124.21 is the DNS you want them to be using (without them having to manually change it). Note that this NATs the TCP and UDP ports 53 for just one address.