Difference between revisions of "Transclusion: IOT-GATE-iMX8: WiFi"
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== Simple Scanning == | == Simple Scanning == | ||
| − | |||
| − | |||
| − | |||
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* Sample WiFi scanning: | * Sample WiFi scanning: | ||
<pre> | <pre> | ||
| − | root@iot-gate-imx8:~# | + | root@iot-gate-imx8:~# nmcli dev wifi list |
</pre> | </pre> | ||
The output will show the list of Access Points and Ad-Hoc cells in range. | The output will show the list of Access Points and Ad-Hoc cells in range. | ||
| Line 14: | Line 10: | ||
== Connecting to an Access Point == | == Connecting to an Access Point == | ||
| − | The [https://manpages.debian.org/stretch/network-manager/nmcli.1.en.html NetworkManager] can be used to connect to an access point. | + | The [https://manpages.debian.org/stretch/network-manager/nmcli.1.en.html NetworkManager] can be used to connect to an access point.<br> |
| − | + | Access point connection command example. | |
| − | + | :Replace SSID with the wireless network name. | |
| − | + | :Replace PASSWORD with the wireless network password. | |
| − | + | :Replace Connection-Name with the new connection name. | |
<pre> | <pre> | ||
root@iot-gate-imx8:~# nmcli radio wifi on | root@iot-gate-imx8:~# nmcli radio wifi on | ||
root@iot-gate-imx8:~# nmcli dev wifi con "SSID" password "PASSWORD" name "Connection-Name" | root@iot-gate-imx8:~# nmcli dev wifi con "SSID" password "PASSWORD" name "Connection-Name" | ||
| + | </pre> | ||
| + | |||
| + | == Creating an Access Point == | ||
| + | The [https://manpages.debian.org/stretch/network-manager/nmcli.1.en.html Host AP] can be used to create an access point. | ||
| + | ===Access point creation example=== | ||
| + | Access point network mask 50.150.250.0/24 is used.<br> | ||
| + | Replace the mask with the desired network mask. | ||
| + | * Install the required utilities | ||
| + | <pre> | ||
| + | root@iot-gate-imx8:~# apt-get update | ||
| + | root@iot-gate-imx8:~# apt-get install --yes hostapd iptables-persistent | ||
| + | </pre> | ||
| + | * Create the configuration file. | ||
| + | :Replace SSID with the wireless network name. | ||
| + | :Replace PASSWORD with the wireless network password. | ||
| + | <pre> | ||
| + | root@iot-gate-imx8:~# cat > /etc/hostapd/hostapd.conf << EOF | ||
| + | interface=wlan0 | ||
| + | ssid=SSID | ||
| + | wpa_key_mgmt=WPA-PSK | ||
| + | wpa_passphrase=PASSWORD | ||
| + | driver=nl80211 | ||
| + | hw_mode=g | ||
| + | channel=7 | ||
| + | wpa=1 | ||
| + | auth_algs=1 | ||
| + | wpa_pairwise=CCMP | ||
| + | EOF | ||
| + | </pre> | ||
| + | * Update the network interfaces configuration to force the WiFi interface to only run in the access point mode. | ||
| + | <pre> | ||
| + | root@iot-gate-imx8:~# cat >> /etc/network/interfaces << EOF | ||
| + | |||
| + | auto lo | ||
| + | iface lo inet loopback | ||
| + | |||
| + | auto wlan0 | ||
| + | iface wlan0 inet static | ||
| + | hostapd /etc/hostapd/hostapd.conf | ||
| + | address 50.150.250.1 | ||
| + | netmask 255.255.255.0 | ||
| + | EOF | ||
| + | </pre> | ||
| + | * Update the dnsmasq configuration file for DNS relay and DHCP server on our WiFi interface. | ||
| + | <pre> | ||
| + | root@iot-gate-imx8:~# cat > /etc/NetworkManager/dnsmasq.d/dnsmasq.conf << EOF | ||
| + | interface=lo,wlan0 | ||
| + | no-dhcp-interface=lo | ||
| + | dhcp-range=50.150.250.2,50.150.250.254,255.255.255.0,12h | ||
| + | EOF | ||
| + | </pre> | ||
| + | * Use iptables for NAT configuration | ||
| + | <pre> | ||
| + | root@iot-gate-imx8:~# iptables -t nat -I POSTROUTING 1 -s 50.150.250.0/24 ! -d 50.150.250.0/24 -j MASQUERADE | ||
| + | root@iot-gate-imx8:~# iptables -I FORWARD 1 -s 50.150.250.0/24 -j ACCEPT | ||
| + | root@iot-gate-imx8:~# iptables -I FORWARD 1 -d 50.150.250.0/24 -j ACCEPT | ||
| + | root@iot-gate-imx8:~# iptables-save > /etc/iptables/rules.v4 | ||
| + | </pre> | ||
| + | * Prevent Network Manager from interfering with hostapd. | ||
| + | <pre> | ||
| + | root@iot-gate-imx8:~# sed -i "/^plugins=/c\plugins=ifupdown,keyfile,ofono" /etc/NetworkManager/NetworkManager.conf | ||
| + | </pre> | ||
| + | * Restart the system. | ||
| + | <pre> | ||
| + | root@iot-gate-imx8:~# reboot | ||
</pre> | </pre> | ||
Revision as of 07:01, 20 December 2020
IOT-GATE-iMX8 / SBC-IOT-iMX8 features an optional 802.11ac WiFi interface, implemented with the Intel WiFi 6 AX200 module.
Contents
Simple Scanning
- Sample WiFi scanning:
root@iot-gate-imx8:~# nmcli dev wifi list
The output will show the list of Access Points and Ad-Hoc cells in range. For more information about tuning WiFi interfaces refer to the “wireless-tools” man pages.
Connecting to an Access Point
The NetworkManager can be used to connect to an access point.
Access point connection command example.
- Replace SSID with the wireless network name.
- Replace PASSWORD with the wireless network password.
- Replace Connection-Name with the new connection name.
root@iot-gate-imx8:~# nmcli radio wifi on root@iot-gate-imx8:~# nmcli dev wifi con "SSID" password "PASSWORD" name "Connection-Name"
Creating an Access Point
The Host AP can be used to create an access point.
Access point creation example
Access point network mask 50.150.250.0/24 is used.
Replace the mask with the desired network mask.
- Install the required utilities
root@iot-gate-imx8:~# apt-get update root@iot-gate-imx8:~# apt-get install --yes hostapd iptables-persistent
- Create the configuration file.
- Replace SSID with the wireless network name.
- Replace PASSWORD with the wireless network password.
root@iot-gate-imx8:~# cat > /etc/hostapd/hostapd.conf << EOF interface=wlan0 ssid=SSID wpa_key_mgmt=WPA-PSK wpa_passphrase=PASSWORD driver=nl80211 hw_mode=g channel=7 wpa=1 auth_algs=1 wpa_pairwise=CCMP EOF
- Update the network interfaces configuration to force the WiFi interface to only run in the access point mode.
root@iot-gate-imx8:~# cat >> /etc/network/interfaces << EOF auto lo iface lo inet loopback auto wlan0 iface wlan0 inet static hostapd /etc/hostapd/hostapd.conf address 50.150.250.1 netmask 255.255.255.0 EOF
- Update the dnsmasq configuration file for DNS relay and DHCP server on our WiFi interface.
root@iot-gate-imx8:~# cat > /etc/NetworkManager/dnsmasq.d/dnsmasq.conf << EOF interface=lo,wlan0 no-dhcp-interface=lo dhcp-range=50.150.250.2,50.150.250.254,255.255.255.0,12h EOF
- Use iptables for NAT configuration
root@iot-gate-imx8:~# iptables -t nat -I POSTROUTING 1 -s 50.150.250.0/24 ! -d 50.150.250.0/24 -j MASQUERADE root@iot-gate-imx8:~# iptables -I FORWARD 1 -s 50.150.250.0/24 -j ACCEPT root@iot-gate-imx8:~# iptables -I FORWARD 1 -d 50.150.250.0/24 -j ACCEPT root@iot-gate-imx8:~# iptables-save > /etc/iptables/rules.v4
- Prevent Network Manager from interfering with hostapd.
root@iot-gate-imx8:~# sed -i "/^plugins=/c\plugins=ifupdown,keyfile,ofono" /etc/NetworkManager/NetworkManager.conf
- Restart the system.
root@iot-gate-imx8:~# reboot
