Difference between revisions of "Set up a hotspot with Linux"
From Linuxintro
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imported>ThorstenStaerk |
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| − | This is an example how to turn your computer into an accesspoint for wireless networks. It is based on SUSE Linux 11. | + | This is an example how to turn your computer into an accesspoint for wireless networks. It is based on SUSE Linux 11.4 but should work same or similar for every distribution. We will use the software HostAPD for this. |
= what you need = | = what you need = | ||
* a Linux kernel, greater than about 2.6.30 | * a Linux kernel, greater than about 2.6.30 | ||
| − | * a Linux that has a [[bridge]] br0 as networking device | + | * a Linux computer that has a [[bridge]] br0 as networking device |
* a USB wireless adapter, in this example we use a Conceptronic device with a RaLink chipset | * a USB wireless adapter, in this example we use a Conceptronic device with a RaLink chipset | ||
= what you do = | = what you do = | ||
| + | |||
| + | == create connectivity == | ||
* plug in your USB wireless network adapter | * plug in your USB wireless network adapter | ||
| Line 61: | Line 63: | ||
* [[set up a dhcp server]] listening on your network bridge br0. As name server, use 8.8.8.8 which is google's name server in the internet | * [[set up a dhcp server]] listening on your network bridge br0. As name server, use 8.8.8.8 which is google's name server in the internet | ||
| + | * verify you can connect to the LAN '''test''' and get an IP address | ||
| + | |||
| + | == Set up NAT == | ||
* [http://www.nerdgrind.com/set-up-nat-with-linux-and-iptables-firewall/ set up NAT] | * [http://www.nerdgrind.com/set-up-nat-with-linux-and-iptables-firewall/ set up NAT] | ||
= See also = | = See also = | ||
* [http://www.nerdgrind.com/set-up-nat-with-linux-and-iptables-firewall/ how to set up NAT] | * [http://www.nerdgrind.com/set-up-nat-with-linux-and-iptables-firewall/ how to set up NAT] | ||
Revision as of 09:37, 10 September 2011
This is an example how to turn your computer into an accesspoint for wireless networks. It is based on SUSE Linux 11.4 but should work same or similar for every distribution. We will use the software HostAPD for this.
what you need
- a Linux kernel, greater than about 2.6.30
- a Linux computer that has a bridge br0 as networking device
- a USB wireless adapter, in this example we use a Conceptronic device with a RaLink chipset
what you do
create connectivity
- plug in your USB wireless network adapter
- find out how to activate the driver:
linux-noqb:~ # hwinfo --usb
[...]
22: USB 00.0: 0000 Unclassified device
[Created at usb.122]
Unique ID: doL0.gHs6xlT8BAF
Parent ID: FKGF.0j9+vWlqL56
SysFS ID: /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6:1.0
SysFS BusID: 2-1.6:1.0
Hardware Class: unknown
Model: "Ralink 802.11 bg WLAN"
Hotplug: USB
Vendor: usb 0x14b2 "Ralink"
Device: usb 0x3c22 "802.11 bg WLAN"
Revision: "0.01"
Driver: "rt73usb"
Driver Modules: "rt73usb"
Device File: wlan1
Speed: 480 Mbps
HW Address: 00:80:5a:4e:1a:eb
Link detected: yes
Module Alias: "usb:v14B2p3C22d0001dc00dsc00dp00icFFiscFFipFF"
Driver Info #0:
Driver Status: rt73usb is active
Driver Activation Cmd: "modprobe rt73usb"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #12 (Hub)
- Activate the driver
modprobe rt73usb
- Activate the NIC
ifup wlan0
- Install HostAPD
yast -i HostAPD
- Do the following settings in /etc/hostapd.conf
driver=nl80211 bridge=br0 channel=3 hw_mode=g auth_algs=1
- Note
- channel=3 and hw_mode=g will work on almost all modern wireless USB adapters, however it may be possible to find one that does not work.
- Start hostapd
hostapd /etc/hostapd.conf
- verify that you see a wireless LAN with the ESSID test, e.g. on your mobile phone
- set up a dhcp server listening on your network bridge br0. As name server, use 8.8.8.8 which is google's name server in the internet
- verify you can connect to the LAN test and get an IP address
