projects:wifi_scanner
Differences
This shows you the differences between two versions of the page.
| Next revision | Previous revision Next revision Both sides next revision | ||
|
projects:wifi_scanner [2019/10/02 14:50] neil created |
projects:wifi_scanner [2020/01/06 17:23] neil |
||
|---|---|---|---|
| Line 14: | Line 14: | ||
| ==== channel_changer.php ==== | ==== channel_changer.php ==== | ||
| <code php> | <code php> | ||
| - | ?php | + | #!/usr/bin/php |
| + | <?php | ||
| $channels = array( | $channels = array( | ||
| 1,2,3,4,5,6,7,8,9,10,11, 12,13,36,40,44,48,52,56,60,64,100,104, | 1,2,3,4,5,6,7,8,9,10,11, 12,13,36,40,44,48,52,56,60,64,100,104, | ||
| Line 28: | Line 29: | ||
| ?> | ?> | ||
| + | </code> | ||
| + | |||
| + | ===== Importing the data ===== | ||
| + | I import the raw tcpdump logs (just a timestamp and mac address) into a simple mysql table: | ||
| + | <code sql> | ||
| + | create table wifi_data (seen_time datetime, mac varchar(17), unique (seen_time,mac)); | ||
| + | </code> | ||
| + | |||
| + | To import the log file I run: | ||
| + | <code bash> | ||
| + | php import.php tcpdump.log | ||
| + | </code> | ||
| + | |||
| + | Which runs this file (note, this is accurate to the minute, rather than the second, to save space): | ||
| + | <code php> | ||
| + | tbd | ||
| </code> | </code> | ||
| ===== Analysing the data ===== | ===== Analysing the data ===== | ||
| I've made some graphs: | I've made some graphs: | ||
| - | * [[https://starflyer.armchairscientist.co.uk/tmp/wifi3.php|General scan #2 - Sat July 6th 2019 8am-11:30am]] - All data grouped in unique MACs per 5 minute period | + | * [[https://starflyer.armchairscientist.co.uk/tmp/wifi3.php|General scan #2 - Sat July 6th 2019 8am-11:30am]] - All data grouped in unique MACs per 1 minute period |
| - | * [[https://starflyer.armchairscientist.co.uk/tmp/wifi3.php|General scan #3 - Sat July 6th 2019 8am-11:30am]] - As above, known devices/equipment filtered - an example of identifying a group of passers (Orange walk outside my window at 10:40am) | + | * [[https://starflyer.armchairscientist.co.uk/tmp/wifi3.php|General scan #3 - Sat July 6th 2019 8am-11:30am]] - As above, known (previously seen the hours/days before) devices/equipment filtered - an example of identifying a group of passerbys (Orange walk outside my window at 10:40am) |
| * [[https://starflyer.armchairscientist.co.uk/tmp/wifi4.php|General scan #4]] - Multiple days showing the weekend and spikes, at 8am and 5pm, of people passing by to and from work. | * [[https://starflyer.armchairscientist.co.uk/tmp/wifi4.php|General scan #4]] - Multiple days showing the weekend and spikes, at 8am and 5pm, of people passing by to and from work. | ||
| - | I'm still working on analysing an entire uniterrupted month to get some general statistics on wifi use around my area. Updates and code to follow. | + | I'm still working on analysing an entire uninterrupted month to get some general statistics on wifi use around my area. Updates and code to follow. |
projects/wifi_scanner.txt · Last modified: 2020/08/03 16:11 by admin
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
