Dd-wrt

DD-WRT

DD-WRT is a Linux-based firmware for wireless routers. It is compatible with several routers, most notably the Linksys WRT54G series (including the WRT54GL and WRT54GS). As with similar projects, DD-WRT is a third-party firmware designed to replace the firmware that ships pre-installed on many commercial routers. This is done for a variety of reasons, including the addition of features which are not typically included in a manufacturer's router firmware.

Read more about Dd-wrt.