Specify the port number and select local IP addresses on which the DNS service will be available.

NOTE: Other DNS servers and client computers expect to find your DNS server on port 53. You should only use a different port number in special situations, for example, if you are mapping port 53 on a NAT router or proxy to a different port number on this computer.

 

A hacker may try to open a lot of TCP connections to exhaust server resources.

Use this option to limit the total number of simultaneous inbound TCP connections Simple DNS Plus will accept. When this number of connections has been reached additional connection attempts are logged and then rejected.