wireless card remote power on comptuer
dav
I have a netgear WGR614 at home.
http://www.netgear.com/products/details/WGR614.php
Now can anyone suggest any wireless card that allow remote power on my
computer at home?
thx in advance.
William P.N. Smith
> Now can anyone suggest any wireless card that allow remote power on my
>computer at home?
You want wireless Wake On Lan? Doesn't exist...
Jeff Liebermann
It most certainly does exist in both access points and wireless
clients.
| http://www.buffalotech.com/products/product-detail.php?productid=88&categoryid=6
"The Wake-On-LAN feature allows the convenience of turning on your
PC from anywhere on the internet, anytime."
The common ADM8211C wireless controller chip supports Wake-on-LAN.
| http://www.infineon.com/cgi-bin/ifx/portal/ep/channelView.do?channelId=-65149&channelPage=%2Fep%2Fchannel%2FproductOverview.jsp&pageTypeId=17099
So does the SIS163 controller chip.
Atheros calls theirs "Wake on Wireless".
Intel Pro2200BG supports what they call "Wake on WLAN" allegedly used
to "allows remote wake up of mobile clients to perform software
updates".
Some wireless PCI cards have WOL features.
| http://www.proxim.com/products/wifi/client/802.11b_pci/
"Wake on LAN, a desktop PC remote management feature, is supported.
The 11b PCI Adapter can be set to constantly monitor the wireless
LAN even when the desktop PC is switched off. The PC will boot up
to enable remote management when the 11b PCI Adapter receives a
Magic Packet."
The problem is that Magic Packet (a broadcast) will propogate nicely
on the LAN side of a router. However, it will not go through the
router from the internet to the LAN, which is what most people want do
do. I don't know how to do that. However, if you setup a VPN from a
client to a router, the client appears as if it were on the LAN side
and Magic Packet again works.
--
Jeff Liebermann je...@comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
SMS
> The problem is that Magic Packet (a broadcast) will propogate nicely
> on the LAN side of a router. However, it will not go through the
> router from the internet to the LAN, which is what most people want do
> do. I don't know how to do that. However, if you setup a VPN from a
> client to a router, the client appears as if it were on the LAN side
> and Magic Packet again works.
True, but isn't the VPN only active when the VPN software is running on
the client?
Unless you want to use something like a Netscreen hardware client
between the router and the client, to keep the VPN connection open.
You could always buy something like
"http://www.digital-loggers.com/lpc.html"
However not all BIOSes and motherboards allow setting them to power-up
the computer upon AC power being applied. I worked on this issue with
thin clients, and it was a nightmare. It wasn't just powering up upon AC
power, it was powering up upon AC power, only if the unit was powered up
prior to the AC power being removed. Some south bridges support this,
some south bridges don't support it at all.
Worst case, you could kluge something to the power supply power-on line,
to simulate the power button being pushed or use the RPS-ATX Computer
System Reboot Device (see "http://www.remotepowerswitch.com/" at the
bottom of the page), and combine it with the device at
""http://www.digital-loggers.com/lpc.html".
William P.N. Smith
>William P.N. Smith <news...@compusmiths.com> hath wroth:
>It most certainly does exist in both access points and wireless
>clients.
Hunh, who would have thunk it? I wouldn't think a laptop that was
powered down would be feeding standby power to it's WiFi hardware to
let it look for WOL, and encryption (especially WPA-TKIP) would be
another nightmare...
Just go to show there are no absolutes! Thanks, Jeff!
SMS
I've never seen a laptop that could do this but it's possible. Usually
on laptops everything gets shut off when power is off, in order to save
the battery, and the wireless card would not be left on, as it's one of
the biggest battery hogs.
Plenty of desktops have PCI slots that will work with network cards that
support WOL.
Bert Hyman
news:8vbfu1579ia75t2am...@4ax.com:
> Hunh, who would have thunk it? I wouldn't think a laptop that was
> powered down would be feeding standby power to it's WiFi hardware
> to let it look for WOL, and encryption (especially WPA-TKIP) would
> be another nightmare...
>
I don't know about the standby power business, but my laptop recovers
a WPA-TKIP connection just fine when manually brought out of standby
or hibernate.
--
Bert Hyman | St. Paul, MN | be...@iphouse.com
SMS
The op is looking for a laptop that keeps the wireless card on, looking
at packets, and powers-up or wakes-up the system upon receipt of a
specific packet. Not looking for recovery of the network connection when
the laptop is powered up manually.
Jeff Liebermann
wrote:
>True, but isn't the VPN only active when the VPN software is running on
>the client?
Nope. I have a router to router PPTP VPN between my palatial office
and my house. WRT54G v3 at the office. WRT54G v1.1 at home.
PPTPclient installed:
| http://pptpclient.sourceforge.net
It's not up right now because I've loaned the WRT54G v1.1 to a hacker,
but when it's working, both ends look like one big network.
However, it's been a while since I've tried WOL over a VPN. It worked
once at a customers using a pair of Linksys BEFVP41 VPN routers but I
don't recall trying it on my own VPN.
Test software:
| http://www.gammadyne.com/cmdline.htm#wol (DOS command line)
| http://www.amd.com/us-en/assets/content_type/utilities/magic_pkt.exe
>Unless you want to use something like a Netscreen hardware client
>between the router and the client, to keep the VPN connection open.
Netcreen (Juniper) 5GT with IPSec is what I would prefer instead of my
WRT54G pair running PPTP. However, PPTP is *MUCH* simpler to setup.
Network power switches:
http://www.wti.com
http://www.leunig.de/_en/_pro/remote_power_switches.html
http://www.zantech.com.au/dataprobe/iboot/
http://www.digital-loggers.com/EPC.html
(and lots more...)
I used to use an ethernet print server to play power switch. The
parallel port was connected to an EPROM and a triac. Send a character
to the print server and it turns the triac on. Send a different
characater and it turns it off.
--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 je...@comix.santa-cruz.ca.us
# http://802.11junk.com je...@cruzio.com
# http://www.LearnByDestroying.com AE6KS
Jeff Liebermann
wrote:
>I've never seen a laptop that could do this but it's possible. Usually
>on laptops everything gets shut off when power is off, in order to save
>the battery, and the wireless card would not be left on, as it's one of
>the biggest battery hogs.
http://www.1e.com/SoftwareProducts/SMSWakeUp/FAQ.aspx#Q29
29. Does Wake-On-LAN work with laptops?
This depends on the configuration for the laptop. Laptops
are usually configured to not respond to wakeup packets when
they are running on batteries. If the laptop is running on mains
and not battery power then the wakeup should work as on a
standard PC.
>Plenty of desktops have PCI slots that will work with network cards that
>support WOL.
Bert Hyman
<scharf...@geemail.com> wrote:
I know, but he was also questioning the ability to resume a WPA-TKIP
session from a powered-down state.
SMS
> I used to use an ethernet print server to play power switch. The
> parallel port was connected to an EPROM and a triac. Send a character
> to the print server and it turns the triac on. Send a different
> characater and it turns it off.
Very creative. The parallel port is your friend.
SMS
> On Mon, 06 Feb 2006 13:33:40 -0800, SMS <scharf...@geemail.com>
> wrote:
>
>> I've never seen a laptop that could do this but it's possible. Usually
>> on laptops everything gets shut off when power is off, in order to save
>> the battery, and the wireless card would not be left on, as it's one of
>> the biggest battery hogs.
>
> http://www.1e.com/SoftwareProducts/SMSWakeUp/FAQ.aspx#Q29
>
> 29. Does Wake-On-LAN work with laptops?
>
> This depends on the configuration for the laptop. Laptops
> are usually configured to not respond to wakeup packets when
> they are running on batteries. If the laptop is running on mains
> and not battery power then the wakeup should work as on a
> standard PC.
Not with wireless. It's basically unheard of for the Mini-PCI slot to be
powered when the unit is off. Personally I've never seen a laptop where
even the on-board wireless could be configured to W.O.L. but it's
possible that one exists. Also, remember that there is a big difference
between W.O.L. or W.O.R. and remote power-up.
Jeff Liebermann
wrote:
Yeah, but not very reliable. Milan/Digi 3000(?) print server. I had
a spare IP address so I just connected it to the internet with nothing
in between. Send the characters to my favorite IP socket number with
Netcat, and it does the power switch thing. The EPROM had 8 outputs
and I used them all for various functions. I like simple protocols.
That worked great until some port scanner found the print server and
started pounding on it looking for vulnerabilities. This particular
installation also controlled the tower lights on a radio site. The
residents near the site were wondering about the light show. I hid it
behind NAT and a firewall, and it's been switching reliably ever
after.
Handy list of print server models and port numbers:
http://www.LearnByDestroying.com/sco/lp/printservers.htm
if you wanna do it thyself.
Jeff Liebermann
>The op is looking for a laptop that keeps the wireless card on, looking
>at packets, and powers-up or wakes-up the system upon receipt of a
>specific packet.
Ummm... I don't think he mentioned a laptop. He said:
"Now can anyone suggest any wireless card that allow remote
power on my computer at home?"
I think we're suppose to guess what type of computer he has at home.
This looks interesting. A web relay:
http://www.controlbyweb.com/webrelay/index.html
$100
SMS
> SMS <scharf...@geemail.com> hath wroth:
>
>> The op is looking for a laptop that keeps the wireless card on, looking
>> at packets, and powers-up or wakes-up the system upon receipt of a
>> specific packet.
>
> Ummm... I don't think he mentioned a laptop. He said:
> "Now can anyone suggest any wireless card that allow remote
> power on my computer at home?"
> I think we're suppose to guess what type of computer he has at home.
>
> This looks interesting. A web relay:
> http://www.controlbyweb.com/webrelay/index.html
> $100
>
This would be perfect. Since the pulse length of the relay can be
programmed, you can hook it in parallel with the computer's
power-button, so you don't have to try to power-on-upon AC power, which
isn't an option on all machines.
You could even give it a pulse length of four seconds for a hard
power-off. Back in the days of Windows 3.1/DOS, I was up at Gateway in
South Dakota and one of the engineers was telling me that the number one
call to technical support was "how do I turn my computer off?" The
Microsoft specified four-second hold to turn off the machine was to
prevent accidental power-down, but customers weren't reading the
manual. Finally they stuck big stickers on the keyboard explaining how
to power-down.
Mark McIntyre
<scharf...@geemail.com> wrote:
>> Hunh, who would have thunk it? I wouldn't think a laptop that was
>> powered down would be feeding standby power to it's WiFi hardware to
>> let it look for WOL, and encryption (especially WPA-TKIP) would be
>> another nightmare...
My toshiba laptop won't WOL, but it does power on from standby or
shutdown, and recover WPA sessions just fine.
Mark McIntyre
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William P.N. Smith
>>>> Hunh, who would have thunk it? I wouldn't think a laptop that was
>>>> powered down would be feeding standby power to it's WiFi hardware
>>>> to let it look for WOL, and encryption (especially WPA-TKIP) would
>>>> be another nightmare...
>I know, but he was also questioning the ability to resume a WPA-TKIP
>session from a powered-down state.
Actually, I was questioning the ability for a laptop that was
powered-down to keep a TKIP network alive enough to receive the WOL
packet. You'd have to wake up every 5 minutes and do the key-exchange
handshake again...
Bert Hyman
news:1mshu1pkj143rolj5...@4ax.com:
So, when I suspend my laptop (or go into hibernation) and start it up
again later, how does it re-establish the link? It doesn't ->look
like it's doing anything special (like it does during an ordinary
boot), but is something going on behind the scenes?
p a m t i m e @ntlworld.com __spc__
"Bert Hyman" <be...@iphouse.com> wrote in message
news:Xns97638A65DC7...@127.0.0.1...
[snip]
> So, when I suspend my laptop (or go into hibernation) and start it up
> again later, how does it re-establish the link? It doesn't ->look
> like it's doing anything special (like it does during an ordinary
> boot), but is something going on behind the scenes?
>
> --
> Bert Hyman | St. Paul, MN | be...@iphouse.com
I find this - when my laptop goes into hibernation or standby, on resume,
the WiFi connection is lost. I have to repair the connection every time...
Bert Hyman
news:ef7Gf.9718$Dn4....@newsfe3-gui.ntli.net:
>
> "Bert Hyman" <be...@iphouse.com> wrote in message
> news:Xns97638A65DC7...@127.0.0.1...
> [snip]
>> So, when I suspend my laptop (or go into hibernation) and start it
>> up again later, how does it re-establish the link? It doesn't
>> ->look like it's doing anything special (like it does during an
>> ordinary boot), but is something going on behind the scenes?
>>
> I find this - when my laptop goes into hibernation or standby, on
> resume, the WiFi connection is lost. I have to repair the
> connection every time...
My IBM R51 with XP Pro, an Intel 2200BG card and IBM's (Lenovo's)
"Access Connections" hooks up again without a hitch. It takes just a
few seconds, not nearly so long as it takes to get its act together
when booting.
I guess it's probably no different from what would happen if I used
the connection manager to disconnect and then re-connect.
William P.N. Smith
>So, when I suspend my laptop (or go into hibernation) and start it up
>again later, how does it re-establish the link?
It re-does the TKIP handshake, probably from the beginning. It's not
that you can't do it when the laptop is powered up, it's that it's
(ahem) difficult to do when you are powered down and someone wants to
send you a WOL packet.
Bert Hyman
Yeah, I can see how that might be a problem.
But, if the card was powered up enough to receive the packet, does
the fact that the link is encrypted enter into the equation at all?
Would the card recognize that the message was for it, and be able to
see what kind of message it was?
William P.N. Smith
>But, if the card was powered up enough to receive the packet, does
>the fact that the link is encrypted enter into the equation at all?
Umm, yes. My point is that the key expires after 5 minutes, and
unless you are in constant contact with the AP you'll miss the key
exchange and be unable to receive the WOL packet.
[Unless they do something like send WOL unencrypted or don't change
the key if the AP can't handshake a new one with the client, or
something like that.]