HOWTO: Wireless Security - WPA1, WPA2, LEAP, etc.

[omer.qadir]

Hello

I have been trying to get my wireless to work and had some luck... but not done yet.

I have intrepid on a Gateway M280, with intel wireless pro 2200.

Network Manager would not connect so I scoured the internet and found manual wpa_supplicant solutions. Now I am able to connect intermittenly but not every time. So everytime I want to connect, I have to go through this routine of killing wpa_supplicant (using wpa_cli terminate) and then restart wpa_supplicant. On average, it takes about 5-10 attempts to connect.

My network is WPA-EAP with TKIP and MSCHAPV2 (some in the UK may know it as eduroam)

So I did the next logical thing... compared the logs from wpa_supplicant for successfull and failed connections. I am attaching relevant portions of the logs as well, but this is what i noticed. When the connection fails, the machine seems to repeatedly receive the same packet during the 4-way handshake (Pairwise Install ACK MIC). At other times, it just magically receives the next packet as well. Something wrong with key exchange maybe?

My connection is not very stable and has periodical disconnections and every time I need to go through this cycle... its very frustrating. Help would be greatly appreciated.

[Favux]

Hi omer.qadir,

While probably not relevant to your situation, several of us have discovered network manager is writing the wrong information in the keys and we have corrected it with gconf editor. We also have noticed that NM will rewrite those keys if it is invoked ie edit connections. On the off chance it's somehow related to your problem:

http://ubuntuforums.org/showthread.php?t=1010650

[Psycho Sonic]

I've followed every step in this and the only problem I have is that when I try to restart my network, I get this:

sudo /etc/init.d/networking restart
* Reconfiguring network interfaces... RTNETLINK answers: No such process
SIOCDELRT: No such process
RTNETLINK answers: No such process
SIOCDELRT: No such process
ioctl[SIOCSIWPMKSA]: Invalid argument
[ OK ]

I'm on Hardy and my card is a WPC54G v2.
A strange thing is that I can't connect to WEP either. When I click on either one (in wicd) I get "This network requires encryption to be enabled."

[wieman01]

I've followed every step in this and the only problem I have is that when I try to restart my network, I get this:

I'm on Hardy and my card is a WPC54G v2.
A strange thing is that I can't connect to WEP either. When I click on either one (in wicd) I get "This network requires encryption to be enabled."

What chipset is your wireless adapter? Please also run & post these for me:

sudo iwlist scan

sudo lshw -C network

[mikhmv]

How can I connect to wifi in ubuntu? Our network has following configuration:
* Network SSID
WIRELESS-PITTNET
* Security Type
WPA-Enterprise
* Encryption Type
TKIP
* Authentication Method
PEAP
EAP-MSCHAPv2
In ubuntu I didn't find how to change encryption type. Before this I used kubuntu and internet worked without any problems.
Thanks advance.

[mikhmv]

sorry, I found solution.
our network used PEAP version 0. in ubuntu by default version 1. when i changed it wifi start work

[Psycho Sonic]

What chipset is your wireless adapter? Please also run & post these for me:

My chipset is Texas Instruments ACX111. I already followed this thread on installing ndiswrapper for it.

That was weird. My card was disabled/turned off, i had to eject it then insert it again.

sudo iwlist scan
lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

wlan0 Scan completed :
Cell 01 - Address: 00:0D:67:00:4F:F2
ESSID:"Softcom_WiFi_Call_888-4-SOFTCOM"
Protocol:IEEE 802.11b
Mode:Managed
Frequency:2.412 GHz (Channel 1)
Quality:37/100 Signal level:-72 dBm Noise level:-96 dBm
Encryption key:off
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:bcn_int=100
Extra:atim=0
Cell 02 - Address: 00:1E:58:F3:D1:21
ESSID:"The Garner Fam"
Protocol:IEEE 802.11b
Mode:Managed
Frequency:2.437 GHz (Channel 6)
Quality:100/100 Signal level:-29 dBm Noise level:-96 dBm
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:bcn_int=100
Extra:atim=0
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK

sudo lshw -C network
*-network:0 UNCLAIMED
description: Ethernet controller
product: RTL8180L 802.11b MAC
vendor: Realtek Semiconductor Co., Ltd.
physical id: 4
bus info: pci@0000:02:04.0
version: 20
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=64 maxlatency=64 mingnt=32
*-network:1
description: Ethernet interface
product: 82801DB PRO/100 VE (MOB) Ethernet Controller
vendor: Intel Corporation
physical id: 8
bus info: pci@0000:02:08.0
logical name: eth0
version: 83
serial: 00:e0:b8:72:ac:01
size: 100MB/s
capacity: 100MB/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e100 driverversion=3.5.23-k4-NAPI duplex=full firmware=N/A ip=192.168.0.102 latency=64 link=yes maxlatency=56 mingnt=8 module=e100 multicast=yes port=MII speed=100MB/s
*-network
description: Wireless interface
product: ACX 111 54Mbps Wireless Interface
vendor: Texas Instruments
physical id: 1
bus info: pci@0000:03:00.0
logical name: wlan0
version: 00
serial: 00:0f:66:b3:75:58
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ndiswrapper+lstinds driverversion=1.52+Linksys,03/10/2004,6.0.0.18 latency=64 link=no module=ndiswrapper multicast=yes wireless=IEEE 802.11g

[wieman01]

Psycho Sonic,

That is weird. Your adapter seems to be alright.

Have you tried the option "Connect to other wireless network" using Network Manager? Then enter the network's name & key. There shouldn't be an issue.

[Psycho Sonic]

Psycho Sonic,

That is weird. Your adapter seems to be alright.

Have you tried the option "Connect to other wireless network" using Network Manager? Then enter the network's name & key. There shouldn't be an issue.

Do mean Knetwork Manager? Because that won't even detect my wireless card, and Manual Configure just sends me to Network Settings which won't let me do... anything. Wicd just tells me "This network requires encryption to be enabled."

I should probably mention that I'm on KDE.

...am I gonna have to switch back to windows?

[wieman01]

KNetworkManager will do. I am also on KDE.

When you click on "Connect to other wireless network" and check the device name in the following dialog, what does it say?