stompro.org

I have come across a few situations where I have wanted to be able to add wildcard dns entries to a pfsense box. Dnsmasq does support this through it's config file, dnsmasq.conf with an entry like this.
address=/proxy.dns.net/192.168.1.1
or on the command line.
-A, --address=/domain/ipaddr Return ipaddr for all hosts in specified domains.
-A /proxy.dns.net/192.168.1.1

This would return 192.168.1.1 for every request for *.proxy.dns.net.

The reason I would find this useful is so that users behind a pfsense firewall that are not using reflection can use a dns based rewriting proxy that is inside the firewall from inside the firewall. See http://www.usefulutilities.com/support/rewrite.html for a description of that type of proxy.
The situation in our case is that we use our ISP's dns servers for the the entries that the world can access, so we have a wildcard dns entry setup with them, which points to the external address of a pfsense box, which forwards it to an internal server. The url rewriting works fine from a remote location, but from inside the firewall dnsmasq passes the long dns names to the external dns server, proquest.com.proxy.example.com gets translated to the external ip address, which doesn't work from inside the firewall.
I think the setup would be very similar to the /usr/local/www/services_dnsmasq_domainoverride_edit.php setup, since it could just add a command line argument.