DummyDNS is a very minimal DNS server which responds to requests to map a supplied name to a corresponding IP address (ie A record lookups). Any other type of request results in an error response code being returned. It is an authorative, non-recursive, non-hierarchical server. It has no concept of the DNS domain name hierarchy, it either knows a name (treated as an unstructured string) has a corresponding address, or assumes it is unknown.

It is designed for use on small, isolated, test networks, such as the lab networks for Cisco CCNA or similar, data networks courses. For these it assists by allowing simple DNS name lookups to occur with a very simple and minimalist configuration. If you want anything smarter than that, or that interacts with the real Internet DNS, then this is not the program for you.

Usage
DummyDNS can run in both command-line and GUI modes, as follows:

DummyDNS
run DummyDNS in GUI mode

DummyDNS -h
display usage message & exit

DummyDNS name
load config from name and run server

In more detail, when run, if no arguments are supplied a GUI interface is launched with buttons to load a configuration and start the server, or quit; plus a log output window.

If started with command-line arguments, either a short usage message is displayed if the '-h" flag is given, or the first argument is assumed to be the name of the configuration file, which is loaded, and the server started in command-line mode, with logging to stderr.

Note that since the server has to bind to the privileged UDP port 53 which is reserved for DNS use, it must be run with appropriate root/administrator privileges on most respectable O/S's. This also means that it cannot be run on a system with a "real" DNS server running already. That of course is not a problem for its target market of isolated lab networks.

Requirements:
* Java

The license of this software is Freeware, you can free download and free use this server utility software.