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--- en:public:femnet:howto:mac-randomization [2021/05/05 23:12] – Translation page created fbit
+++ en:public:femnet:howto:mac-randomization [2022/04/13 12:21] (current) – Aktualisiert gem. Diff der deutschen Version nex
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-====== mac-randomization ======
+====== Problems with MAC randomization ======
+<WRAP half info centeralign>
+This Wiki page isn't complete yet.
+If you know how to disable MAC randomization for operating systems which are not listed here, please tell us how via <helpdesk@fem.tu-ilmenau.de> so we can improve this wiki page.
+Thank you for your help!
+</WRAP>
+===== What is the problem? =====
+MAC randomization is a new technology used in many mobile devices to prevent you from being tracked by your MAC address when searching for Wi-Fi networks.
+Hence, the feature contributes to privacy and protection against tracing.
+A MAC address is randomly determined and used when searching for and connecting to networks.
+However, in FeM-Net, devices are identified by their MAC address.
+So, if MAC randomization is activated, the device tries to connect via a MAC address that does not match the one in our database, which is why the connection fails.
+You can recognize MAC randomization when you see a different MAC address on our [[https://myinfo.fem.tu-ilmenau.de|MyInfo page]] in the FeM_Welcome Wi-Fi than the one in the settings of the affected device, for example.
+===== How do I disable that? =====
+This varies for each operating system, but there is usually the option of deactivating the feature only for individual Wi-Fi networks, which ensures privacy.
+==== Android ====
+Android supports MAC randomization from Android 10.
+This feature is therefore not available on older systems.
+For deactivation:
+  * Open settings > Network & Internet > Wi-Fi
+  * For our Wi-Fi networks (e.g. „FeM.PSK“ and „FeM.1X“) open the settings by pressing and holding down the respective Wi-Fi network > Modify network
+  * In the advanced options, there should now be a corresponding privacy setting that allows to switch off MAC randomization or set the MAC address type to the phone's original MAC address (“phone MAC”).
+==== iOS ====
+Apple Support offers a guide for iOS 14: https://support.apple.com/en-us/HT211227
+==== Windows ====
+In the Wi-Fi settings (Start menu --> Settings --> network and internet --> Wi-Fi) there is a section called "Random hardware addresses".
+The switch "Use random hardware addresses" must be deactivated.
+This should deactivate MAC randomization for Wi-Fi.