Re: Wake On LAN from the Internet

On Wed, Oct 26, 2005 at 10:17:38PM -0400, Mark Owen wrote:
>  Only way I can think of is to setup a VPN in which you log in to that
> will then connect you to the destined computer.
>  Easier move would be to ditch the password and rely strictly on the
> mac address.
>  WOL depends on upd port 9 and the mac address to be available to wake.
>  The mac address is a unique 6 hex byte code (12 alphanumeric
> characters a-f, 0-9).  Good enough password for me if you block
> unnecessary ports.
>  I'd open udp port 9 on your dlink and forward it to your computer. 
> IP address would be the public IP assigned to your dlink.

Not to nitpick... but keep in mind that while there are 16^12 possible
MAC addresses, in reality the brute force of one is much simpler than
that.  Vendors use MAC addresses that are in a very specific range.
I don't have exact numbers, but if you assume that the target MAC is one
of Dell, Intel or 3com, your brute force space suddenly gets quite a bit
smaller.  For example, if I assume you've got a dell, I only need to
brute force MACs that start with:

   0:6:5b           
   0:8:74
   0:b0:d0
   0:b:db
   0:c0:4f
   0:d:56

Still not an easy task at 16^6 combinations, but well within the range
of being doable.  Worthwhile?  Maybe, maybe not.

I've never really looked into WOL before but found this:

   http://www.depicus.com/wake-on-lan/woli.aspx

-jon



> --
> Mark Owen