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--- products:sbc:common:configurations:wifi [2022/07/06 00:00]
nick created
+++ products:sbc:common:configurations:wifi [2022/07/08 05:10] (current)
frank
@@ Line 1: / Line 1: @@
 ====== Wi-Fi ======
+===== Introduction =====
+This document is mainly about Wi-Fi. The first part of the document covers how to use Wi-Fi under Ubuntu, and the second part of the document covers how to use Wi-Fi under Android.
+===== Ubuntu =====
+<tabbox Desktop OS>
+Wi-Fi settings are in the upper-right corner, click on the lower triangle to see the Wi-Fi settings options.
+{{/products/sbc/common/configurations/wifi-select.png?500|wifi-select}}
+Choose a Wi-Fi network that you want to connect to.
+{{/products/sbc/common/configurations/wifi-setting.png?500|wifi-setting}}
+After entering the password, you can use Wi-Fi normally.
+{{/products/sbc/common/configurations/wifi-password.png?500|wifi-password}}
+<tabbox Server OS>
+<WRAP info >
+Ubuntu/Debian servers can use NetworkManager to setup Wi-Fi via command line.
+</WRAP>
+. Scan for Wi-Fi Networks:
+```shell
+$ nmcli d wifi list
+IN-USE  SSID                          MODE   CHAN  RATE        SIGNAL  BARS  SEC
+        VIM                           Infra  2     195 Mbit/s  92      ▂▄▆█  WPA
+        Wesion                        Infra  7     260 Mbit/s  84      ▂▄▆█  WPA
+        VIM_5G                        Infra  161   405 Mbit/s  84      ▂▄▆█  WPA
+        HP-HOTSPOT-48-LaserJet M1218  Infra  7     54 Mbit/s   69      ▂▄▆_  WPA
+        ChinaNet-xjCH                 Infra  13    270 Mbit/s  67      ▂▄▆_  WPA
+        BRGCN_GUEST                   Infra  1     405 Mbit/s  64      ▂▄▆_  WPA
+        BRGCN                         Infra  1     405 Mbit/s  62      ▂▄▆_  WPA
+```
+. Create a hashed pre-computed PSK-key with wpa_passphrase:
+  * To avoid storing plain-text passwords, there is an handy tool called ''wpa_passphrase'' that comes with ''wpa_supplicant''.
+  * Input the command ''wpa_passphrase your_ssid your_password'' to create a 256-bit PSK passphrase from your_ssid and your_password.
+```shell
+khadas@Khadas:~$ wpa_passphrase your_ssid your_password
+network={
+  ssid="your_ssid"
+  #psk="your_password"
+  psk=6d5324610d3627ab4f97b80cf22b742996d82c022b283a874e88d083a299734c
+}
+```
+The new password is now a hashed passphrase: ''6d5324610d3627ab4f97b80cf22b742996d82c022b283a874e88d083a299734c''.
+<WRAP info >
+Replace the your_ssid & your_password with your SSID and password.
+</WRAP>
+. Connect to a Wi-Fi Network:
+```shell
+$ sudo nmcli d wifi connect your_ssid password 6d5324610d3627ab4f97b80cf22b742996d82c022b283a874e88d083a299734c wep-key-type key
+Device 'wlan0' successfully activated with '206ab399-3822-4652-ba4c-64847af0bce9'.
+```
+<WRAP info >
+Replace ''your_ssid'' and ''6d5324610d3627ab4f97b80cf22b742996d82c022b283a874e88d083a299734c'' with your SSID and passphrase.
+</WRAP>
+. Disconnect from a Wi-Fi Network:
+```shell
+$ sudo nmcli d disconnect wlan0
+Device 'wlan0' successfully disconnected.
+```
+</tabbox>

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