PDA

View Full Version : WLAN disconnects every X minutes/hours



Karsten Wutzke
02-20-08, 09:58 AM
Hello!

I have a brand new Netgear WGR614 v7 but ever since it it running I
experience WLAN disconnects from my laptop. I use WPA-PSK [TKIP] for
securing my WLAN. I also tried this system control setting (I
deactivated something I can't remember where I found it, but seems to
be a frequent cause for disconnects in Windows XP)...

The disconnects occurr irregularly, sometimes running fine for hours,
sometimes there a 2 or disconnects within one hour, usually no more
than 1-4 disconnects a day. But when occurring at the wrong time, it's
really annyoning...

Does anyone have a clue what might be wrong?

Karsten

Jeff Liebermann
02-20-08, 11:23 AM
Karsten Wutzke <kwutzke@web.de> hath wroth:

>I have a brand new Netgear WGR614 v7 but ever since it it running I
>experience WLAN disconnects from my laptop. I use WPA-PSK [TKIP] for
>securing my WLAN. I also tried this system control setting (I
>deactivated something I can't remember where I found it, but seems to
>be a frequent cause for disconnects in Windows XP)...
>
>The disconnects occurr irregularly, sometimes running fine for hours,
>sometimes there a 2 or disconnects within one hour, usually no more
>than 1-4 disconnects a day. But when occurring at the wrong time, it's
>really annyoning...
>
>Does anyone have a clue what might be wrong?

Just a guess. Interference from other systems, microwave ovens,
municipal wireless networks, and cordless phones. See:
<http://wireless.wikia.com/wiki/Wi-Fi#Interference>
for a list of possible sources. If it's so severe that it causes a
disconnect, it may be difficult to cure. Do a site survey with Kismet
or Netstumbler and see if there are any nearby strong signals. Note
the channels and set your WGR614v7 to a hopefully un-used channel (1,
6, or 11).

The WGR614 v7 can save your settings to a file. If you're going to
experiment with settings, I suggest you reset the router to defaults,
apply the basic settings (password, SSID, WPA, WAN access, etc) and
save the settings. The rule is "Don't do anything you can't undo".

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

John Navas
02-20-08, 11:28 AM
On Wed, 20 Feb 2008 07:58:59 -0800 (PST), Karsten Wutzke
<kwutzke@web.de> wrote in
<807ee65f-3c9c-4450-9f77-a44b67db8855@z17g2000hsg.googlegroups.com>:

>I have a brand new Netgear WGR614 v7 but ever since it it running I
>experience WLAN disconnects from my laptop. I use WPA-PSK [TKIP] for
>securing my WLAN. I also tried this system control setting (I
>deactivated something I can't remember where I found it, but seems to
>be a frequent cause for disconnects in Windows XP)...
>
>The disconnects occurr irregularly, sometimes running fine for hours,
>sometimes there a 2 or disconnects within one hour, usually no more
>than 1-4 disconnects a day. But when occurring at the wrong time, it's
>really annyoning...
>
>Does anyone have a clue what might be wrong?

The likely problem is radio interference.
See that topic in the wiki below.
Try different channels (1, 6, 11).

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

John Navas
02-20-08, 11:29 AM
On Wed, 20 Feb 2008 09:23:46 -0800, Jeff Liebermann <jeffl@cruzio.com>
wrote in <f4oor35m5s2tgj3aumomjt25df2djuob9g@4ax.com>:

>Karsten Wutzke <kwutzke@web.de> hath wroth:
>
>>I have a brand new Netgear WGR614 v7 but ever since it it running I
>>experience WLAN disconnects from my laptop. I use WPA-PSK [TKIP] for
>>securing my WLAN. I also tried this system control setting (I
>>deactivated something I can't remember where I found it, but seems to
>>be a frequent cause for disconnects in Windows XP)...
>>
>>The disconnects occurr irregularly, sometimes running fine for hours,
>>sometimes there a 2 or disconnects within one hour, usually no more
>>than 1-4 disconnects a day. But when occurring at the wrong time, it's
>>really annyoning...
>>
>>Does anyone have a clue what might be wrong?
>
>Just a guess. Interference from other systems, microwave ovens,
>municipal wireless networks, and cordless phones. See:
><http://wireless.wikia.com/wiki/Wi-Fi#Interference>
>for a list of possible sources. If it's so severe that it causes a
>disconnect, it may be difficult to cure. Do a site survey with Kismet
>or Netstumbler and see if there are any nearby strong signals. ...

Sure, but that won't find non-Wi-Fi interference, which may well be the
cause of the problem.

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

bi241@scn.org
02-23-08, 12:19 AM
On Feb 20, 10:58 am, Karsten Wutzke <kwut...@web.de> wrote:
> Hello!
>
> I have a brand new Netgear WGR614 v7 but ever since it it running I
> experience WLAN disconnects from my laptop. I use WPA-PSK [TKIP] for
> securing my WLAN. I also tried this system control setting (I
> deactivated something I can't remember where I found it, but seems to
> be a frequent cause for disconnects in Windows XP)...
>
> The disconnects occurr irregularly, sometimes running fine for hours,
> sometimes there a 2 or disconnects within one hour, usually no more
> than 1-4 disconnects a day. But when occurring at the wrong time, it's
> really annyoning...
>
> Does anyone have a clue what might be wrong?
>
> Karsten

WPA-PSK authentication is harder to crack than WEPs, but it comes with
a drawbacks in connectivity. WPA encryption algorithms make it
susceptible to deauth attacks to the points that a deauth flood will
disrupt the network and render it completely unusable. If the deauth
attack is running a in a loop, it serves as a mass denial-of-service
and none of the clients will be able to connect to your router.

John Navas
02-23-08, 11:36 AM
On Fri, 22 Feb 2008 22:19:30 -0800 (PST), bi241@scn.org wrote in
<2521745c-5b9b-4462-9497-09db2d274e0c@b29g2000hsa.googlegroups.com>:

>WPA-PSK authentication is harder to crack than WEPs, but it comes with
>a drawbacks in connectivity. WPA encryption algorithms make it
>susceptible to deauth attacks to the points that a deauth flood will
>disrupt the network and render it completely unusable. If the deauth
>attack is running a in a loop, it serves as a mass denial-of-service
>and none of the clients will be able to connect to your router.

That's nothing against WPA-PSK, since it's trivial to disrupt a Wi-Fi
network by a number of different means, including simple jamming.

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

bi241@scn.org
02-27-08, 01:48 AM
On Feb 23, 12:36 pm, John Navas <spamfilt...@navasgroup.com> wrote:
> On Fri, 22 Feb 2008 22:19:30 -0800 (PST), bi...@scn.org wrote in
> <2521745c-5b9b-4462-9497-09db2d274...@b29g2000hsa.googlegroups.com>:
>
> >WPA-PSK authentication is harder to crack than WEPs, but it comes with
> >a drawbacks in connectivity. WPA encryption algorithms make it
> >susceptible to deauth attacks to the points that a deauth flood will
> >disrupt the network and render it completely unusable. If the deauth
> >attack is running a in a loop, it serves as a mass denial-of-service
> >and none of the clients will be able to connect to your router.
>
> That's nothing against WPA-PSK, since it's trivial to disrupt a Wi-Fi
> network by a number of different means, including simple jamming.
>
> --
> Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
> John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
> Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
> Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

That's everything against WPA-PSK!! The thing is, chump, one can build
sound arguments against every man-made thing that has ever created.
All coins have two sides. Do you know that there are trade-offs in
engineering designs? Reliability vs. performance, reliability vs. ease
of use, performance vs. ease of use, or reliability and performance vs
cost... you name it!!

Don't be ignorant. Educate yourself and know where you stand on the
issue.

DTC
02-27-08, 06:27 AM
bi241@scn.org wrote:
> Don't be ignorant. Educate yourself and know where you stand on the
> issue.

RUT RO...I better start fixing some popcorn.

John Navas
02-27-08, 11:20 AM
On Tue, 26 Feb 2008 23:48:10 -0800 (PST), bi241@scn.org wrote in
<1a458bbd-14e4-4af6-a828-152e674b21a8@t66g2000hsf.googlegroups.com>:

>On Feb 23, 12:36 pm, John Navas <spamfilt...@navasgroup.com> wrote:
>> On Fri, 22 Feb 2008 22:19:30 -0800 (PST), bi...@scn.org wrote in
>> <2521745c-5b9b-4462-9497-09db2d274...@b29g2000hsa.googlegroups.com>:
>>
>> >WPA-PSK authentication is harder to crack than WEPs, but it comes with
>> >a drawbacks in connectivity. WPA encryption algorithms make it
>> >susceptible to deauth attacks to the points that a deauth flood will
>> >disrupt the network and render it completely unusable. If the deauth
>> >attack is running a in a loop, it serves as a mass denial-of-service
>> >and none of the clients will be able to connect to your router.
>>
>> That's nothing against WPA-PSK, since it's trivial to disrupt a Wi-Fi
>> network by a number of different means, including simple jamming.

>That's everything against WPA-PSK!! The thing is, chump, one can build
>sound arguments against every man-made thing that has ever created.
>All coins have two sides. Do you know that there are trade-offs in
>engineering designs? Reliability vs. performance, reliability vs. ease
>of use, performance vs. ease of use, or reliability and performance vs
>cost... you name it!!
>
>Don't be ignorant.

Been there; done that. But thanks for your concern.

>Educate yourself and know where you stand on the
>issue.

Learn some manners.

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

seaweedsteve
02-27-08, 12:42 PM
On Feb 27, 11:20 am, John Navas <spamfilt...@navasgroup.com> wrote:
>
> Learn some manners.
>

Exactly !

veilzside
04-20-08, 08:54 PM
help, I also have almost the same problem, except I use an external WLAN card to use with my laptop, what annoyed me the most is that my internet connection can suddenly disconnect in the middle of working and CANNOT connect again until I restart my computer, I have checked my WLAN card and there is no problem with it, I have also tried another card plugged but the same problem still occured....
Pleasee.... does anyone has the solution? Thanks before....