Linux-access-point

Description

Configuration to create an AP in Linux (also works in Raspberry Pi!!).

This configuration allow us to create a new network IEEE 802.11 using the wireless interface of any Linux PC.

Configuration

First, we need to install hostapd and dnsmasq.

sudo apt-get update
sudo apt-get -y install hostapd dnsmasq

• hostapd let us to create the access point
• dnsmasq is used to create a dhcp and dns server

Now let's stop the services of the new packets.

sudo service hostapd stop
sudo service dnsmasq stop
sudo update-rc.d hostapd disable
sudo update-rc.d dnsmasq disable

It's time to configure our AP with hostapd. This configuration its founded in /etc/hostapd.conf.

interface=wlan0
driver=nl80211
ssid=WifiGratis
#Enable WPA2 encryption password
wpa_key_mgmt=WPA-PSK
wpa=2
wpa_passphrase=S3cur3_p@ssw0rd
#Set access point harware mode to 802.11n
hw_mode=g
ieee80211n=1
channel=6

And now, we configure the DHCP server to assign an IP address to any device that connects to our AP. We are going to edit the file /etc/dnsmasq.conf and add these lines at the end of the file.

interface=wlan0
dhcp-range=10.10.0.2,10.10.0.100,12h
server=10.10.0.1

As an added, we can use the arp_table.sh script to view the ARP table to know who connected and which is their IP. Finally we just need to execute access_point.sh and arp_table.sh scripts in different terminals.

sudo bash ~/access_point.sh

sudo bash ~/arp_table.sh

Example