# Using DNS Every `isle daemon` process ships with a DNS server which runs automatically. This server will listen on port 53 on the VPN IP of that particular host. The server will serve requests for `.hosts.` hostnames, where `` is the name of any host in the network, and ` is the network's domain name. If a request for a hostname not within the network's domain is received then the server will forward the request to a pre-configured public resolver. The set of public resolvers used can be configured in the `/etc/isle/daemon.yml` file. This DNS server is an optional feature of Isle, and not required in general for making use of the network. ## Example As an example of how to make use of this DNS server, let's say my host's IP on the network is `10.10.1.1`, and my network's domain is `cool.internal`. In order to configure the host to use the isle DNS server for all DNS requests, I could do something like this: ``` sudo su echo "nameserver 10.10.1.1" > /etc/resolv.conf ``` From that point, all DNS requests on my host would hit the isle DNS server. If I request `my-host.hosts.cool.internal`, it would respond with the appropriate private IP. NOTE that configuration of dns resolvers is very OS-specific, even amongst Linux distributions, so ensure you know how your resolver configuration works before doing this.