Network-hotspot

1. First of all you should make sure, that your wifi adapter supports infrastructure hotspots. If you used connectify on your windows system and it worked, skip this step.

open terminal and type: sudo lshw | less

find -network section and make sure that driver is ath5k or ath9k, this solution will only work for those drivers, but should fit the needs for the most laptop users.

2. We now need to install 2 additional tools to make out hotspot, 1st one is hostapd(hotspot server), 2nd one is dnsmasq(dns dhcp server)

in terminal type: sudo apt-get install hostapd dnsmasq

3. stop those services if started already, and prevent them from starting on system start up.

in terminal type: sudo service hostapd stop sudo service dnsmasq stop sudo update-rc.d hostapd disable sudo update-rc.d dnsmasq disable

4. Now we need to set up config files. in terminal type: sudo gedit /etc/dnsmasq.conf or sudo kate /etc/dnsmasq.conf if you use kde

add those lines to the config file Code:

Bind to only one interface

bind-interfaces

Choose interface for binding

interface=wlan0

Specify range of IP addresses for DHCP leasses

dhcp-range=192.168.150.2,192.168.150.10

5. hostapd config

in terminal type: sudo gedit /etc/hostapd.conf

and add those lines

Code:

Define interface

interface=wlan0

Select driver

driver=nl80211

Set access point name

ssid=myhotspot

Set access point harware mode to 802.11g

hw_mode=g

Set WIFI channel (can be easily changed)

channel=6

Enable WPA2 only (1 for WPA, 2 for WPA2, 3 for WPA + WPA2)

wpa=2 wpa_passphrase=mypassword

You can change ssid name and password for anything you want here. Current config will create hotspot named myhotspot with mypassword password.

6. Now create anywhere you want a file named start.sh edit it with any text editor like this:

Code:

#!/bin/bash

Start

Configure IP address for WLAN

sudo ifconfig wlan0 192.168.150.1

Start DHCP/DNS server

sudo service dnsmasq restart

Enable routing

sudo sysctl net.ipv4.ip_forward=1

Enable NAT

sudo iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE

Run access point daemon

sudo hostapd /etc/hostapd.conf

Stop

Disable NAT

sudo iptables -D POSTROUTING -t nat -o ppp0 -j MASQUERADE

Disable routing

sudo sysctl net.ipv4.ip_forward=0

Disable DHCP/DNS server

sudo service dnsmasq stop sudo service hostapd stop

You will probably need to change ppp0 in this to eth0 (or any other number which refers to your wired connection.

7. Last step. Now you can start your hotspot by starting our script. just run it using sudo sh for me it looks like this sudo sh /home/ogyct/Desktop/start.sh because I have it on my desktop