Re: Was [OT] Help with power usage calculation, Now: Wake on lan problem

[Simon Ryley <simon.ryley@xxxxxxxxxx>]

Sorry, I should have said that I've looked at that once, and if I
understand it correctly, the broadcast address I need is:

192.168.0.5 =     11000000.10101000.00000000.00000101 (Home PC IP on the
home network, fixed IP address)

255.255.255.0 = 11111111.11111111.11111111.00000000 (Subnet mask, set by
router, but can be changed)

Inverted =          00000000.00000000.00000000.11111111

Ored together = 11000000.10101000.00000000.11111111 = 192.168.0.255

Is that correct?

I can't access that address from outside the router.  If I try to set up
the firewall rule to direct my request to 192.168.0.255 I get an Invalid
LAN IP address error from my router, and it won't let me set the rule.
So it doesn't work.

I've done some googling on this in the last few days, but can't find the
definitive guide to how to set up wake on lan over a router.

Thanks,

Simon


Paul Robinson wrote:

> Don't know much about WOL, but since the original request is a
> broadcast, maybe you need
> to get the firewall to forward the packet to your local broadcast
> address rather than
> directing it to one machine.
>
> The page you referenced tells you how to calculate your local
> broadcast address.
>
> HTH
> Paul
>
> ----- Original Message -----
> From: "Simon Ryley" <simon.ryley@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Thursday, March 17, 2005 12:48 PM
> Subject: [ukha_d] Was [OT] Help with power usage calculation, Now:
> Wake on lan problem
>
>
> >
> > Following on from the discussion of energy costs, I'm trying to
get wake
> > on lan to work properly over the internet so I can turn on my
home/media
> > pc as and when required, without having to leave in on all the
time.
> > Any help on this one would be great.
> >
> > I access my home machine using UltraVnc from time to time, either
to run
> > programs that I can't install at work, or to access output files
from
> > those programs.  Obviously the machine needs to be on to allow
this,
> > which is a little wasteful of power when I probably use it for
about one
> > hour per day on average.
> >
> > Using the Wake on Lan GUI tool from http://tinyurl.com/6z7xs I can wake
> > the machine up from another machine connected to the home
network.
> > However, I can't wake the machine up from work, i.e. over the
internet.
> >
> > I use a Netgear DG834G with the firewall turned on.  I've added a
custom
> > service and a firewall rule to the router to direct any UDP
requests to
> > port 9 of the router to port 9 of the IP address that is
permanently
> > assigned to the home machine that I want to turn on.  According
to the
> > firewall logs, it is receiving the UDP request and sending it to
the
> > correct address.  But the machine never starts up.
> >
> > Does anyone have any experience or ideas?
> >
> > Thanks,
> >
> > Simon
>
>
>
>
>
>
>
>
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