How to turn your Ubuntu laptop into a WiFi AP
I have found myself, wanting to access WiFi connection from my phone and the Only available connection was ethernet. Which led to finding ways I can make my laptop behave like a WiFi AP.
First things first, install the dependencies.
Your NIC (wlan0) needs to be able to support AP/ Infrastructure mode.
$ sudo apt install iw $ iw list
You should look for “Supported interface modes” section, where it should be a entry called AP like below
Supported interface modes: * IBSS * managed * AP * AP/VLAN * monitor * mesh point
If your driver doesn’t shows this AP, It doesn’t mean it can’t create wireless hotspot.
- Install git
$ sudo apt install git
- Install dnsmasq
$ sudo apt install dnsmasq
- Install Hostapd
Hostapd is the standard linux daemon that will be used to create your access-point
$ sudo apt install hostapd
- Install DHCP server
$ sudo apt-get install dhcp3-server
- Install IProute
$ sudo apt install iproute2
git clone https://github.com/oblique/create_ap cd create_ap sudo make install
Creating a WiFi AP
To create an AP run the following code, Assuming that your WiFi NIC name is
wlan0 and Ethernet is
$ sudo create_ap wlan0 eth0 MyAccessPoint
You should now start seeing something like this on your terminal, ie you can now surf the interweb from your mobile device.
Config dir: /tmp/create_ap.wlan0.conf.E9PIWP0I PID: 18086 Network Manager found, set wlan0 as unmanaged device... DONE Sharing Internet using method: nat hostapd command-line interface: hostapd_cli -p /tmp/create_ap.wlan0.conf.E9PIWP0I/hostapd_ctrl Configuration file: /tmp/create_ap.wlan0.conf.E9PIWP0I/hostapd.conf Failed to create interface mon.wlan0: -23 (Too many open files in system) Try to remove and re-create mon.wlan0 Failed to update rate sets in kernel module Using interface wlan0 with hwaddr d8:fc:93:17:b8:a8 and ssid 'MyAccessPoint'