This how to helps you to learn how you enforce your Raspberry Pi to forget a known WiFi Network. As you can imagine, it’s quite simple, but as usual there are a couple of aspects that you need to know. Mainly, in which file the WiFi data is stored and how to delete this information.
Forget WiFi Network On Raspberry
Index Of How To Forget WiFi Network on Raspberry
Background
For whatever reason, you maybe like your Raspberry Pi to forget a particular WiFi network. This How To Forget WiFi Network on Raspberry helps you to enforce your Raspberry “forgetting” the unwanted WiFi Network.
The environment used for this HowTo:
- Raspberry Pi 4 Model B
- Raspbian GNU/Linux 11 (bullseye), Release 11 (This is similar to Debian Linux)
Of How To Forget WiFi Network on Raspberry
The good news is, that all WiFi information is stored in one file! That means, we only need to edit this file and delete the WiFi network that we would like the Raspberry to forget. This file is called “wpa_supplicant.conf” and its stored in “/etc/wpa_supplicant/”.
Lets kill the WiFi network that we do not like:
sudo vi /etc/wpa_supplicant/wpa_supplicant.conf
This command opens the file in which all the WiFi information needed to connect a WiFi is stored. Now, it’s getting honestly very simple. Simply delete the WiFi that you do not like your Raspberry to connect to. A network your Raspberry can connect to looks for example like this:
network={
ssid="49ers Network"
psk="MyLAKing$49er$Pa$$word2connect!"
key_mgmt=WPA-PSK
}
network={
ssid="Zurich Football Club"
psk="MyZur!chF00tball!Club!W!F!"
key_mgmt=WPA-PSK
}Delete the WiFi Network
So, if I would like to delete a WiFi network (as an alternative disable it, please check the Disable the WiFi Network chapter), then we need simply to delete the relevant networks. For example, if we would like to kill in the above the 49ers WiFi Network, but we would like only to keep the Zurich Football Club WiFi, then we simply delete the following lines:
network={
ssid="49ers Network"
psk="MyLAKing$49er$Pa$$word2connect!"
key_mgmt=WPA-PSKBtw. In case you get the opportunity to travel Europe, then I strongly recommend to watch a game of Zurich Football Club, as it is amazing what these fans do.
After you deleted the 49ers Network, the file “sudo vi /etc/wpa_supplicant/wpa_supplicant.conf” in this example should look like this:
network={
ssid="Zurich Football Club"
psk="MyZur!chF00tball!Club!W!F!"
key_mgmt=WPA-PSK
}Instead of deleting the network, you also could disable it. To do so, go to the next chapter: Disable the WiFi Network chapter
Disable the WiFi Network
Disabling is actually very simple. We assume in this scenario exactly the same sample as in the above. The aim is to simply disable the 49ers network. To do so we leverage on “#” that we simple set in front of the related confirmation. Once done, it should look like this:
# network={
# ssid="49ers Network"
# psk="MyLAKing$49er$Pa$$word2connect!"
# key_mgmt=WPA-PSK
#}
network={
ssid="Zurich Football Club"
psk="MyZur!chF00tball!Club!W!F!"
key_mgmt=WPA-PSK
}As you can see, we simply have put the “#” in front of all network configuration that relate to the 49ers network. The Raspi want be able anymore to login into this WiFi network.
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