Hackers of the world, unite! You have nothing to lose but the lousy stock firmware your routers shipped with.
Apart from smartphones, routers and wireless base stations are undoubtedly the most widely hacked and user-modded consumer devices. In many cases the benefits are major and concrete: a broader palette of features, better routing functions, tighter security, and the ability to configure details not normally allowed by the stock firmware (such as antenna output power).
The hard part is figuring out where to start.
rest here