Difference between revisions of "WiFi"
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| − | To | + | {{Note| To configure WiFi you need to [[Wireless Tools| install wireless tools first.]]}} |
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| − | + | ==Common operations== | |
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| + | ====List network interfaces supporting WiFi:==== | ||
<pre class=apf> | <pre class=apf> | ||
# iwconfig | # iwconfig | ||
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</pre> | </pre> | ||
| − | + | ==== Show all Access Points (AP) available for your APF ==== | |
| − | + | <pre class=apf> | |
| − | + | # iwlist wlan0 scan | |
| − | == | + | wlan0 Scan completed : |
| + | Cell 01 - Address: XX:XX:XX:66:47:48 | ||
| + | ESSID:"TOTO" | ||
| + | Mode:Master | ||
| + | Channel:1 | ||
| + | Frequency:2.412 GHz (Channel 1) | ||
| + | Quality=88/100 Signal level:25/100 | ||
| + | Encryption key:on | ||
| + | Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s | ||
| + | 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s | ||
| + | 48 Mb/s; 54 Mb/s | ||
| + | Extra:tsf=00000009d398fec8 | ||
| + | Extra: Last beacon: 1390ms ago | ||
| + | ... | ||
| + | </pre> | ||
| − | + | ==== Connect to an unencrypted AP ==== | |
<pre class=apf> | <pre class=apf> | ||
| − | + | # iwconfig wlan0 essid AP_NAME | |
</pre> | </pre> | ||
| + | |||
| + | ==== Get an IP address ==== | ||
| + | <pre class=apf> | ||
| + | # udhcpc -i wlan0 | ||
| + | </pre> | ||
| + | |||
| + | |||
| + | ==Encryption settings== | ||
| + | To configure WiFi cryptography, only WEP can be set as is. If you want to configure dongle for WPA, install [http://hostap.epitest.fi/wpa_supplicant/ wpa_supplicant]. | ||
| + | |||
| + | ==== WEP configuration ==== | ||
This example is given for a WiFi Access Point named armadeus, but the key is | This example is given for a WiFi Access Point named armadeus, but the key is | ||
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</pre> | </pre> | ||
| − | + | == Surf on the net == | |
To surf on the web, you can use ''links'' software : | To surf on the web, you can use ''links'' software : | ||
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==Links== | ==Links== | ||
| + | * [[Wireless_Tools| wireless tools installation]] | ||
* [[USB_to_WiFi_adapter|USB to WiFi adapters tested with Armadeus boards]] | * [[USB_to_WiFi_adapter|USB to WiFi adapters tested with Armadeus boards]] | ||
[[Category:WiFi]] | [[Category:WiFi]] | ||
Revision as of 10:47, 4 February 2009
 |
Note: To configure WiFi you need to install wireless tools first. |
Contents
Common operations
List network interfaces supporting WiFi:
# iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
sit0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Tx-Power=0 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Encryption key:off
Power Management:off
Link Quality:0/100 Signal level:112/146 Noise level:0/0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Show all Access Points (AP) available for your APF
# iwlist wlan0 scan
wlan0 Scan completed :
Cell 01 - Address: XX:XX:XX:66:47:48
ESSID:"TOTO"
Mode:Master
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=88/100 Signal level:25/100
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Extra:tsf=00000009d398fec8
Extra: Last beacon: 1390ms ago
...
Connect to an unencrypted AP
# iwconfig wlan0 essid AP_NAME
Get an IP address
# udhcpc -i wlan0
Encryption settings
To configure WiFi cryptography, only WEP can be set as is. If you want to configure dongle for WPA, install wpa_supplicant.
WEP configuration
This example is given for a WiFi Access Point named armadeus, but the key is false of course ;) :
# iwconfig wlan0 essid armadeus # iwconfig wlan0 key 12345678901234567890 # ifconfig wlan0 up firmware: requesting rt73.bin ADDRCONF(NETDEV_UP): wlan0: link is not ready # ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Now, the WiFi adapter is ready and attached :
# iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
sit0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:"armadeus"
Mode:Managed Frequency:2.437 GHz Access Point: 00:1B:2F:E7:E4:08
Bit Rate=2 Mb/s Tx-Power=7 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Encryption key:XXXXXXXXXXXXXXXXXXXXXXXXXX Security mode:restricted
Power Management:off
Link Quality:0/100 Signal level:73/146 Noise level:0/0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
We can configure the network to access internet via the WiFi interface instead of the Ethernet one :
# ifconfig eth0 down # ifconfig wlan0 192.168.0.212 # route add default gw 192.168.0.1 dev wlan0
And configure the nameserver in /etc/resolv.conf
domain dev.null nameserver 192.168.0.207 ~ ~ ~
We can now ping the best website in the world :
# ping www.armadeus.org PING www.armadeus.org (213.186.33.5): 56 data bytes 64 bytes from 213.186.33.5: seq=0 ttl=122 time=66.735 ms 64 bytes from 213.186.33.5: seq=1 ttl=122 time=50.392 ms ^C --- www.armadeus.org ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max = 50.392/58.563/66.735 ms
Surf on the net
To surf on the web, you can use links software :
# links www.armadeus.org
It's an ASCII internet browser. For more informations about Links.
