If you have direct DNS access then you don't need to do anything else. You know you have direct DNS
access if you can resolve host names to IP addresses.
NOTE: as desproxy-dns listens in port 53 (which is less than 1024) you may need administrator privileges
to exec desproxy-dns (in fact if you are running UN*X, you actually have to run desproxy-dns as root).
OK, so you have a dns server accessible now. But your computer doesn't know anything about that. You must
configure your network accordingly (again, need to be root in UN*X).
Edit /etc/resolv.conf and add the line "nameserver 127.0.0.1". You don't have to restart anything. Just
test ping and see if it works.