I'm trying to create a server-side adblocking mechanism through dnsmasq, but I only get results on the server itself, not the computers attached to my local network.
First of all, my router is the default DNS server, so I have to setup all my devices to use the dnsmasq server as primary DNS. I can check it works when I try to access one of my self-hosted websites: if I can access them locally then the dnsmasq dns works. In this regards, all is OK.
Then the ad-blocking part. I check if the blocking works by entering this command on both my server and my main computer:
# nslookup doubleclick.net
On the server I get:
Server: 192.168.1.51 Address: 192.168.1.51#53 Name: doubleclick.net Address: 192.168.1.51
So it works there.
On my computer I get:
Server: 184.108.40.206 Address: 220.127.116.11#53 Non-authoritative answer: Name: doubleclick.net Address: 18.104.22.168
So here it doesn't...
My setup is as thus:
I setup the config dir of dnsmasq:
Put the file dnsmasq.adlist.conf there populated by a script which fetch an ad servers list from a site and compile them in dnsmasq readable entries.
So to make it short, domains blocked by dnsmasq are correctly redirected from within the server, but not from the other devices. It's like dnsmasq fails to broadcast the newly added domain list.
I can provide any information you like to help me with resolving this issue. It may also point to a misconfiguration from before this adblocking experiment. Anyway, I hope that this is easy to nail down...
My server is on FreeBSD 9.3