Step 1
Install Ubuntu 11.04 Server Edition on your netbook/old pc/thin client etc.. with default settings.
In my case I am using a thinclient (eth0 = wired ethernet adapter; wlan0 = wireless adapter).
Step 2
sudo apt-get install isc-dhcp-server hostapd
Step 3
sudo pico /etc/hostapd/hostapd.conf
interface=wlan0 driver=nl80211 ssid=UbuntuAP hw_mode=g channel=11 wpa=1 wpa_passphrase=UbuntuAPPassPhrase wpa_key_mgmt=WPA-PSK wpa_pairwise=TKIP CCMP wpa_ptk_rekey=600
Step 4
sudo pico /etc/dhcp/dhcpd.conf
default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option broadcast-address 10.20.30.255;
option domain-name "mydomain.example";
subnet 10.20.30.0 netmask 255.255.255.0 {
range 10.20.30.10 10.20.30.50;
option domain-name-servers 8.8.4.4, 208.67.222.222;
option routers 10.20.30.254;
}
Step 5
sudo pico /etc/default/isc-dhcp-server
INTERFACES="wlan0"
Step 6
Enable IP Routing and save the IPtable rules.
sudo bash echo "1" > /proc/sys/net/ipv4/ip_forward iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables-save > /etc/iptables.rules
Step 7
Assign static IP to Wireless adapter and auto load IPtable rules
sudo pico /etc/network/interfaces
auto wlan0 iface wlan0 inet static address 10.20.30.254 netmask 255.255.255.0 pre-up iptables-restore < /etc/iptables.rules
Step 8
Auto start DHCP Server and hostapd (AccessPoint)
sudo pico /etc/rc.local
service isc-dhcp-server start hostapd -dd /etc/hostapd/hostapd.conf
Reference
- https://exain.wordpress.com/tag/rt2800usb/
- https://help.ubuntu.com/community/IptablesHowTo