[[!img no-wifi/mac-_spoofing-_disabled.png link="no" alt="Notification about network card being disabclass="screenshot" alt="Notification: MAC address anonymization failed"]]
[[!img no-wifi/mac_spoofing_disabled.png link="no" class="screenshot" alt="Notification: MAC address anonymization failed"]]
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In this case, you can disable MAC address anonymization to get your Wi-Fi interface to work in Tails. Disabling MAC address anonymizationin the Welcome Screen. Doing so has security implications, so read carefully our [[documentation about MAC address anonymization|first_steps/welcome_screen/mac_spoofing]]before doing so.
In this case, you can disable MAC address anonymization in the Welcome Screen. Doing so has security implications, so read carefully our [[documentation about MAC address anonymization|first_steps/welcome_screen/mac_spoofing]].
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You receive the notification **Connection failed:Activation of network connection failed**.
<div class="caution"> <p>Tails cannot hide the information that identifies your phone on the local network. If you connect your phone to a:</p> <ul> <li><p>AWi-Fi network, then: the network will knowcan see the MAC address of your phone.</p> <p>This has security implications that are discussedwe explain in our [[documentation on MAC address anonymization|first_steps/welcome_screen/mac_spoofing]]. Some phones have a feature to hide the realMAC address of the phone.</p></li> <li><p>A mMobile data network, then : the network will beis able to know the identifier of your SIM card (IMSI) and alsothe serial number of your phone (IMEI).</p></li> </ul> </div>
<div class="caution"> <p>Tails cannot hide the information that identifies your phone on the local network. If you connect your phone to a:</p> <ul> <li><p>Wi-Fi network: the network can see the MAC address of your phone.</p> <p>This has security implications that we explain in our [[documentation on MAC address anonymization|first_steps/welcome_screen/mac_spoofing]].Some phones have a feature to hide the MAC address of the phone.</p></li> <li><p>Mobile data network: the network is able to know the identifier of your SIM card (IMSI) and the serial number of your phone (IMEI).</p></li> </ul> </div>