Wake on Lan through Office connect

Hi All

I have a quick question regarding WOL through an office connect router.

I have a 3Com office connect ADSL router, model 3CRWDR100A-72. I have tried
to issue a Wake On Lan command remotely, to power up my server. This did
not work. I can see from the logs, that the magic packet was received, but
to no avail.

I have set up port forwarding using port 9 UDP to my internal IP. Now, as
this should actually work with the MAC address, I am not sure how this
router will find the correct path. I have also tried to broadcast to the
subnet, but hte firewall does not allow x.x.x.255 to be entered. I don't
see anywhere where I can bind the IP address to a MAC either.


Any ideas how I would be able to accomplish this?

Thanks in advance!
Leo

Hi Leo,

Wake-On-Lan over the internet requires that you're able to broadcast the
magic packet to the broadcast address of your internal network. As you
said, most simple routers can't forward traffic to the 255 address for your
x.x.x.x/24 network, so you may have to consider a small office grade router
to get the job done. I have a Cisco SOHO 91 that I got about 5 years ago
specifically so I could finally get WOL working over the internet. If you
happen upgrade to a router that can do it, here are a couple of important
tips:

First, you have to enable IP directed broadcast on the inside interface -
this can actually make you vulnerable to broadcast attacks and it's really
not recommended, but like I said, I've been doing it for 5 years and have
never had a problem. Here's what it looks like on the inside interface of
my Cisco:

interface Ethernet0
ip address 10.10.10.1 255.255.255.0
ip directed-broadcast
ip nat inside
no cdp enable
hold-queue 32 in

Next you'll need the port forwarding rule, I have nat running so I just use
a static route. I use udp port 7 for the magic packet, here's the format:

ip nat inside source static udp 10.10.10.255 7 interface Ethernet1 7

And that's all there is to it when you have a router that can do ip directed
broadcasts - other than that it might be impossible to get the magic packet
to pass. By the way, there is a WEALTH of wake-on-lan and WOL over the
internet on the Depicus site, maybe you can find it helpful.
http://www.depicus.com I actually use his WOL over the Internet ASP page to
wake my computer up - it's really good for testing too, you can send the
packet from the internet over and over while you're testing...

Jay.


"Leo" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi All
>
> I have a quick question regarding WOL through an office connect router.
>
> I have a 3Com office connect ADSL router, model 3CRWDR100A-72. I have
> tried
> to issue a Wake On Lan command remotely, to power up my server. This did
> not work. I can see from the logs, that the magic packet was received,
> but
> to no avail.
>
> I have set up port forwarding using port 9 UDP to my internal IP. Now, as
> this should actually work with the MAC address, I am not sure how this
> router will find the correct path. I have also tried to broadcast to the
> subnet, but hte firewall does not allow x.x.x.255 to be entered. I don't
> see anywhere where I can bind the IP address to a MAC either.
>
>
> Any ideas how I would be able to accomplish this?
>
> Thanks in advance!
> Leo
>