Linux Wireless
Template:Linux If you are new to Linux, this article is not for you (except the Ubuntu section)
Contents
LEAP
Wireless Utilities
Cisco
Gentoo
First you'll need to download linux-acu-driver-v21.tar.gz from the Cisco website and put it in /usr/portage/distfiles/ Now you can get the client-utils
#emerge cisco-aironet-client-utils
Launch the aironet-client-utiltiy with:
#/opt/cisco/bin/acu
Now this user interface has to be taken with a grain of salt. It is in fact, so salty that you should not even use it.
Kernel Configuration
You may or may not need to recompile your kernel since some distributions tend to include everything as a module.
First step is to figure out what kind of Wireless Card you have.
#lspci | grep Wireless
The output of the previous command should look similar to this:
02:02.0 Network controller: AIRONET Wireless Communications Cisco Aironet Wireless...
Compile in the Cisco/Aironet 34X/35X/4500/4800 ISA and PCI cards under Device Drivers > Network device support > Wireless LAN (non-hamradio) Select whichever you have (PCMCIA or ISA/PCI) After you have compiled in or as a module you should now see another ethernet device (eth1 in my case)
Cisco / LEAP Authenication by Command Line Interface
If the computer recognizes the Cisco card, you can just try using the leapset command line program which will ask for a username and password. Then you can use dhcpcd on the interface to obtain an IP address.
To reduce typing make a script
#!/bin/sh /opt/cisco/bin/leapscript UANETID PASSWORD dhcpcd eth1
Intel PROSet
Intel did not write a Linux driver, however, there is an open source solution. A utility called "ipw2200"
Kernel Configuration
Networking ---> [*] Generic IEEE 802.11 Networking Stack Device Drivers ---> Generic Driver Options ---> [*] Hotplug firmware loading support Network Device support ---> Wireless LAN (non-hamradio) ---> [*] Wireless LAN drivers (non-hamradio) & Wireless Extensions Cryptographic options ---> [*] Cryptographic API <*> AES cipher algorithms (i586) <*> ARC4 cipher algorithm <*> Michael MIC keyed digest algorithm <*> CRC32c CRC algorithm (this wasn't prompted in the emerge of ipw2200)
Getting and installing the Intel utilities
- Intel 3945: Click Here
- Intel 2100: Click Here
- Intel 2200/2915: Click Here
Once you have the proper driver installed. Load the appropriate modules ex:
#modprobe ipw2200
You should now have a wireless interface (most likely eth1), so bring it up:
#ifconfig eth1 up
WPA Supplicant
Most distributions have the wireless-tools package. It will need to be installed. Gentoo users can emerge wireless-tools. Wpa_supplicant is required to connect. If there are no packages this in the distribution used, compiling by the source may be an option. Source Code. Gentoo users can emerge wpa_supplicant. Assistance with compiling software can be found in room 52c in Bierce Library. After having wpa_supplicant installed, the wpa_supplicant.conf file should contain the following:
File: /etc/wpa_supplicant.conf |
ctrl_interface=/var/run/wpa_supplicant ctrl_interface_group=0 update_config=1 ap_scan=1 network={ ssid="tsunami" key_mgmt=IEEE8021X eap=LEAP identity="UANET ID" password="PASSWORD" } |
Now that the wpa_supplicant is installed, launch it with:
#wpa_supplicant -i eth1 -D wext -c /etc/wpa_supplicant/wpa_supplicant.conf
Get an IP with the following command:
#dhcpcd eth1
Ubuntu 7.10 (Gutsy)
As of 7.10, Ubuntu/Xubuntu/Kubuntu includes the latest Knetworkmanager package, which allows for LEAP connectivity without manually configuring wpa_supplicant. Under Applications->Add/Remove, search for and install knetworkmanager by clicking it and then clicking Apply Changes (it will pull in about 13 prerequisites in normal ubuntu or xubuntu, but will likely already be installed in kubuntu). Now, run knetworkmanager from Applications->Internet, which will load it into the tray. This will take some time to complete. Right click on the new tray icon, click tsunami, change the wireless security from WEP to LEAP, type in the UANET ID and password, and click Login to Network. However, it does not seem to save user login information, so loading up knetworkmanager and logging in will be necessary with each boot.
PEAP
The University of Akron now supports PEAP wireless authentication. Linux is compatible with the University's implementation of PEAP through use of the WPA supplicant. For best results please use the following configuration template.
File: /etc/wpa_supplicant.conf |
eapol_version=1 ap_scan=2 fast_reauth=1 network={ ssid="tsunami" key_mgmt=IEEE8021X scan_ssid=1 eap=PEAP identity="uanetid" password="passwordhere" phase1="peaplabel=0" phase2="auth=MSCHAPV2" } |
Profile Utilities
There are not too many programs available for wireless profile management. But here is a small list to try
- gtkwifi
- gwifiapplet
- kwifimanager (Does not have LEAP support.)
- NetworkManager (Currently does not support phase2 which is required.)
- KNetworkManager (Same issue as NetworkManager)
- wifi-radar