"Last week we rambled over the OpenWRT landscape, issued dire warnings and concluded with the easy, but risky, installation method. Today we'll learn the harder, but much safer, installation method. This one is fun, because it depends on an unpatched bug in the Linksys firmware.
"You'll need an FTP client to upload the OpenWRT firmware (See Part 1 to learn what to download and where to get it), and your router should have a static IP. We'll use atftp just like in the OpenWRT documentation, because every FTP client has different commands; it would be cruel to introduce yet another potential trouble spot. Be sure to do all this with a Linux PC over a wired Ethernet connection; don't even try it over wireless. (This also works from Windows using PuTTY; see the OpenWRT docs for howto.) For additional safety, do this with only the router and your Linux PC connected to each other, and keep the router off the network until you can configure it with SSH and an administrator login and password..."
