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WLAN laufende Qualitätsmessung

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  WLAN laufende Qualitätsmessung Thomas <thomasitcom@gmail.com> - 2017-06-25 00:00 +0200
    Re: WLAN laufende Qualitaetsmessung "Thomas Schmitt" <scdbackup@gmx.net> - 2017-06-25 09:40 +0200
      Re: WLAN laufende Qualitaetsmessung Reco <recoverym4n@gmail.com> - 2017-06-25 10:10 +0200
        Re: WLAN laufende Qualitaetsmessung "Thomas Schmitt" <scdbackup@gmx.net> - 2017-06-25 10:40 +0200
      Re: WLAN laufende Qualitaetsmessung Reco <recoverym4n@gmail.com> - 2017-06-25 10:10 +0200
        Re: WLAN laufende Qualitaetsmessung Hans <hans.ullrich@loop.de> - 2017-06-25 10:10 +0200
          Re: WLAN laufende Qualitaetsmessung Reco <recoverym4n@gmail.com> - 2017-06-25 10:20 +0200
            Re: WLAN laufende Qualitaetsmessung Hans <hans.ullrich@loop.de> - 2017-06-25 10:40 +0200
              Re: WLAN laufende Qualitaetsmessung Curt <curty@free.fr> - 2017-06-25 14:00 +0200

#182612 — WLAN laufende Qualitätsmessung

Hallo,
mein neuer Nachbar ist ein bisschen komisch. Er hat schon einen 
Ultraschallvertreiber gegen unsere zwei Hunde direkt an unserem Zaun 
eingesteckt. Als er mitbekommen hat das wir das gemerkt haben hat er den 
schnell entfernt.

Nun haben wir laufend Probleme mit dem WLAN, mal kommt keiner mehr rein, ein 
anderes mal bricht zyklisch die dbm Sendeleistung  zusammen als wäre der 
Sender zwei Häuser weiter. (Android WiFi Manager)

Mit welcher Software kann ich messen was da wann los ist. Sehen kann ich kein 
Netzwerk mit SSID auf dem gleichen Kanal.

Gruss

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#182621 — Re: WLAN laufende Qualitaetsmessung

Hi,

debian-user ist englischsprachig. Probier's mal auf dem deutschen Ableger:
  debian-user-german@lists.debian.org


Just in case somebody knows a program for WLAN quality surveillance:

The OP suspects that his neighbor after annoying the dogs has now
taken measures to hamper the WLAN. The question is whether there are
programs which can diagnose WLAN quality problems and identify potential
causes.


Have a nice day :)

Thomas

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#182622 — Re: WLAN laufende Qualitaetsmessung

On Sun, 25 Jun 2017 11:00:28 +0300
Reco <recoverym4n@gmail.com> wrote:

> 	Hi.
> 
> On Sun, 25 Jun 2017 09:36:57 +0200
> "Thomas Schmitt" <scdbackup@gmx.net> wrote:
> 
> > Hi,
> > 
> > debian-user ist englischsprachig. Probier's mal auf dem deutschen Ableger:
> >   debian-user-german@lists.debian.org
> > 
> > 
> > Just in case somebody knows a program for WLAN quality surveillance:
> > 
> > The OP suspects that his neighbor after annoying the dogs has now
> > taken measures to hamper the WLAN. The question is whether there are
> > programs which can diagnose WLAN quality problems and identify potential
> > causes.
> 
> airodump-ng from aircrack-ng will solve this with ease.
> kismet will too.
> 
> Just observe which WiFi channels are most crowded and switch own
> Access Point (s) to a least crowded one.
> 
> Repeat as needed.

Followup. Using aireplay-ng for the purpose of lowering signal quality
for neighbor WiFi can be subject to criminal penalties and therefore is
not recommended.

Reco

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#182628 — Re: WLAN laufende Qualitaetsmessung

Hi,

Reco wrote:
> Using aireplay-ng for the purpose of lowering signal quality
> for neighbor WiFi can be subject to criminal penalties

That would be a good catch in a neighborhood feud which normally is
rather faught by unnecessary lawn mowing, loud music, stinking garbage
cans, or obscene garden gnomes. (The use of song loving roosters is
widely banned.)

I rather imagined a radio noise generator like
  https://commons.wikimedia.org/wiki/File:BWB_23342_ARTUS_Radaranlage_Typ_ME_0632.jpg


Have a nice day :)

Thomas

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#182623 — Re: WLAN laufende Qualitaetsmessung

	Hi.

On Sun, 25 Jun 2017 09:36:57 +0200
"Thomas Schmitt" <scdbackup@gmx.net> wrote:

> Hi,
> 
> debian-user ist englischsprachig. Probier's mal auf dem deutschen Ableger:
>   debian-user-german@lists.debian.org
> 
> 
> Just in case somebody knows a program for WLAN quality surveillance:
> 
> The OP suspects that his neighbor after annoying the dogs has now
> taken measures to hamper the WLAN. The question is whether there are
> programs which can diagnose WLAN quality problems and identify potential
> causes.

airodump-ng from aircrack-ng will solve this with ease.
kismet will too.

Just observe which WiFi channels are most crowded and switch own
Access Point (s) to a least crowded one.

Repeat as needed.

Reco

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#182624 — Re: WLAN laufende Qualitaetsmessung

I believe tshark (and wireshark of course) is also be capable of showing bad 
or corrupted traffic. You can set filters, i.e. to filter out rejects and similar, 
and if they are abnormal high, you know, something is bad.

Just an idea...

Best 

Hans

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#182625 — Re: WLAN laufende Qualitaetsmessung

	Hi.

On Sun, 25 Jun 2017 10:06:38 +0200
Hans <hans.ullrich@loop.de> wrote:

> I believe tshark (and wireshark of course) is also be capable of showing bad 
> or corrupted traffic. You can set filters, i.e. to filter out rejects and similar, 
> and if they are abnormal high, you know, something is bad.
> 
> Just an idea...

It's complex at best. While tshark, wireshark or plain tcpdump can be
used for this purpose, it would take a non-trivial post-processing to
show signal quality/junk ratio grouped by APs.

An invocation of 'airmon-ng wlan0' is much simpler IMO.


Of course, if neighbor in question actually managed to connect to OP's
APs, and wreaking havoc from inside the OP's LAN - then wireshark would
be priceless.

Reco

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#182627 — Re: WLAN laufende Qualitaetsmessung

I read the original post now (in German, and as I am German, no problem).
In his case I think "kismet" is a good start. So he can see, if there are 
other AP on the same frequency. I also suggest "wavemon", which shows all AP 
and its strenth.

If the neighbour is sending weired pckages (maybe with aireplay-ng, who 
knows), then wireshark or tshark is working fine for it. Also you have then 
evidence for his doings, which is illegal (here in Germany). 

Maybe also the package "horst" is also helpful, which is designed for excactly 
these issues: check your traffic. (I have never used it for now).

Hope this helps

Best regards

Hans

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#182636 — Re: WLAN laufende Qualitaetsmessung

On 2017-06-25, Hans <hans.ullrich@loop.de> wrote:
> I read the original post now (in German, and as I am German, no problem).
> In his case I think "kismet" is a good start. So he can see, if there are 
> other AP on the same frequency. I also suggest "wavemon", which shows all AP 
> and its strenth.
>
> If the neighbour is sending weired pckages (maybe with aireplay-ng, who 
> knows), then wireshark or tshark is working fine for it. Also you have then 
> evidence for his doings, which is illegal (here in Germany). 
>
> Maybe also the package "horst" is also helpful, which is designed for excactly 
> these issues: check your traffic. (I have never used it for now).

Was ist mit den hunden? 

> Hope this helps
>
> Best regards
>
> Hans
>
>
>
>


-- 
"It might be a vision--of a shell, of a wheelbarrow, of a fairy kingdom on the
far side of the hedge; or it might be the glory of speed; no one knew." --Mrs.
Ramsay, speculating on why her little daughter might be dashing about, in "To
the Lighthouse," by Virginia Woolf.

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