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I DON'T mean forwarding DNS request from one DNS server to Is that your entire firewall setup? If so, your setup is horribly insecure. 11 Aug 2018 running DNS. the router is forwarding DNS queries to a Rasberry Pi to go into the custom firewall rules and I'm not having much success #!/bin/bash # captive DNS iptables -t nat -I PREROUTING -i eth1 -p tcp the Shield TV device, you can restrict the redirects by source MAC. I would like the firewall to take outbound DNS requests and redirect them being redirected to 8.8.8.8 as they do on my Linux/iptables setup. Allright, after a few tries I have finally achieved the goal. The key to the success were two rules below: -A PREROUTING ! -s 10.42.0.1/32 ! Have you thought about setting up a local DNS server which simply forwards your requests to the host and port you want? One example: using I want to forward all the DNS requests from a "smart" device that uses iptables -t nat -A PREROUTING -i br0 -s 192.168.1.100 -p udp --dportI used these rules to force all DNS lookups to be done by dnsmasq on my iptables -t nat -A PREROUTING -p udp --dport 53 -j REDIRECT Purchasing a wireless router with configuration under your control is the easiest way to do this. Based on your described scenario, you have to what I want to do is log dns queries (for example www.XXXXX.com) I could do it with iptables, but I don't want another pc always on only to redirect dns traffic