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Can anyone tell me how to tweak my laptop so that the wireless access does not get disabled after a short period (approx 15 min) of inactivity. It's really annoying to have to reconnect every time this happens.

Using an Atheros AR9285 wireless card in an Asustek N61Jv laptop.

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Which OS are you using? – Kirk Jun 5 '11 at 3:05
Are you connecting to your own wireless network or someone else's? (If the latter, that may be the reason all on its own.) – Kerri Shotts Jun 5 '11 at 3:21
If you're really desperate while waiting for an answer, try doing a continuous PING command to the router. *nix and BSD variants will typically do this by default (e.g., ping will go forever), on Windows I believe you have to add a switch (-t) to the command. That should easily generate enough activity over the network to keep you connected until a better answer is found. – Kerri Shotts Jun 5 '11 at 3:23

For vpn [works on xp, win7]
In the right pane, find Autodisconnect and change the time accordingly.
Also from this link a net.config option.
From ComputerHope Forum

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Open notepad.exe and paste this code

set wshShell = Wscript.CreateObject("wscript.Shell")
hours = 24 ' set hours
for i = 1 to hours*60
beep = chr(007)
WshShell.Run "cmd /c @echo " & beep, 0

save the file as fileName.vbs and run it. this will disallow your computer to go to sleep as it will play a beep sound every 10 minutes.

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