====== Engineering Problems with Wireless Networks ======



===== Wireless Networking in the Developing World =====
 

A free book about designing, implementing, and maintaining low-cost wireless networks: \\
http://wndw.net/book.html

===== Grundlagen =====

  * **Understanding Beacons:** 
    * [[http://www.wi-fiplanet.com/tutorials/print.php/1492071|Link to wi-fiplanet.com]]

  * **Understanding 802.11 Frame Types:** 
    * [[https://wi-fiplanet.com/understanding-802-11-frame-types/|Link to wi-fiplanet.com]]


  * **Understanding Management-Frames:** 
    * https://mrncciew.com/2014/09/29/cwap-802-11-mgmt-frame-types/
    * [[https://www.ip-insider.de/was-sind-protected-management-frames-pmf-80211w-a-780737/|Protected Management Frames (PMF; 802.11w)]]

  * **Understanding Data-Frames:** 
    * http://www.wildpackets.com/resources/compendium/wireless_lan/wlan_packets
    * [[http://www.wi-fiplanet.com/tutorials/print.php/3442991]]

  * **Gigabit WLAN:** 
    * https://www.golem.de/news/im-maschinenraum-so-erreichen-funknetzwerke-gigabit-datenraten-2205-165092.html

  * **WiFi Mesh 802.11s:** 
    * https://wireless.wiki.kernel.org/en/developers/Documentation/ieee80211/802.11s
    * https://www.youtube.com/watch?v=vVoZppb_FR0


  * **802.11ac:** 
    * A Survival Guide: [[http://chimera.labs.oreilly.com/books/1234000001739/index.html|Link zum Buch]]

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===== Mitschneiden von WLAN Paketen =====

==== Wireshark ====

Wireshark stellt mitgeschnittene WLAN Daten üblicherweise mit einem //fake// Ethernet-Header dar. Mit einer geeigneten Betriebssystem/Hardware-Kombination lassen sich aber auch die kompletten 802.11 Frames erfassen und darstellen: 
https://wiki.wireshark.org/CaptureSetup/WLAN  

==== Kissmet ====

  * http://www.kismetwireless.net/android-pcap/

==== Cisco AP  ====

  * https://mrncciew.com/2014/09/22/802-11ac-wireless-packet-captures/

==== HW für 5GHz ====

  * https://www.wlan-blog.com/sicherheit/wlan-packet-capturing-fuer-24-ghz-und-5-ghz-monitor-mode-mit-dem-awus036ach/

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===== Radio Planning =====

  * http://www.swisswireless.org/wlan_calc_en.html
  * http://spectrum.ieee.org/telecom/wireless/why-wifi-stinksand-how-to-fix-it


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===== Grundsätzliche Probleme im Netz =====
 
==== Exposed/Hidden Node: ====
 
  * http://en.wikipedia.org/wiki/Exposed_node_problem

==== Channel Bonding: ====

  * https://www.networkcomputing.com/wireless-infrastructure/channel-bonding-wifi-rules-and-regulations
==== Coordinated channel access with CTS/RTS ====

  * http://freakquency.hubbert.org/2010/12/rtscts-and-you.html
  * http://www.wi-fiplanet.com/tutorials/article.php/1445641
  * http://www.tutonaut.de/anleitung-wlan-empfang-mit-android-als-heatmap-visualisieren.html

==== Multicast ====

  * http://superuser.com/questions/730288/why-do-some-wifi-routers-block-multicast-packets-going-from-wired-to-wireless
  * https://www.net.princeton.edu/filters/mdns.html
  * https://support.oc.edu/hc/en-us/articles/203195533-mDNS-Multicast-network-Traffic-filter

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===== Site Survey =====


  * http://en.wikipedia.org/wiki/Comparison_of_wireless_site_survey_applications
  * http://www.vistumbler.net
  * https://www.acrylicwifi.com/en/wlan-software/

Google-Suche: [[https://www.google.de/search?q=heatmap+wlan|heatmap wlan]]

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===== Security =====
  * http://www.heise.de/security/artikel/WLAN-Angriffstool-wifiphisher-2513841.html
  * https://www.golem.de/news/wlan-kameras-ausgeknipst-wer-hat-die-winkekatze-geklaut-1910-144199.html