Wake On Lan
 

So does anybody actually know how to send one of these wakeup packets to a computer with WOL enabled?

the easiest way is to download a program that does it for you.. www.webattack.com has them.. do a search.. amd and intel both have progs that will do it too.. WOL has to be enabled in the bios as well as the operating system.. in windows sometimes the wol stuff is called RWU for remote wake up..

you should really turn WOL off its very easy for people to send shutdown packets to your computer as well as wakeup packets

That really depends on the environment and the intended use. In some instances having WOL turned on outweighs any issue of having it turned off.

At work we use a somewhat "modified" version of WOL (though I think actually WOL is based off this). We use Compaq's Lights-Out Insight manager. It allows us to talk to the computer while it is physically powered off, bringing up a session as if we were sitting in front of it.

From there, we can power it on, etc. So yea, in some cases it is useful, but your average home user will probably not want it enabled.

actually i dont think you can remotely shut down a pc with wake-on-lan packets, hence,why it's called wake-on-lan.. you can remotely shutdown a machine with the same kind of software that wakes it up.. but that software has to have either client software on the other end to commuicate and/or administrative access to that computer.