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Old 18-11-2007, 12:08   #4
JohnHorb
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Location: Sale, Cheshire
Services: 10MB Broadband, DTV, Telephone
Posts: n/a
Re: Wake on Lan problem?

From the depicus site:-

If you wish to use Wake On Lan over the internet you will need to set up your destination firewall/router to allow "Subnet Directed Broadcasts". Most routers and firewalls disable this option by default.

Plus, I think you may need to broadcast the WOL packet. The following, again from the depicus site, tells how to determine the broadcast address - basically the network address with the host address as all 1s

1) Convert machine address to binary e.g. 10.208.20.1 = 00001010.11010000.00010100.00000001

2) Convert the Subnet Mask to Binary e.g. 255.255.240.0 = 11111111.11111111.11110000.00000000

3) Invert the Binary Subnet Mask e.g. 11111111.11111111.11110000.00000000 becomes 00000000.00000000.00001111.11111111

4) Or the machine address and the inverted subnet mask e.g. 00001010.11010000.00010100.00000001 Or 00000000.00000000.00001111.11111111 = 00001010.11010000.00011111.11111111 = 10.208.31.255
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