Wireless lan connected but no internet

[blnl]

Computer: HP Compaq nc6000
Linux distro: OpenSUSE 11.0

Problem description: With WPA encription enabled I have no internet access, although the wireless lan is connected. However when the encription is disabled I have normal internet access.

By the way, Windows XP on the same machine, and also another linux machine (openSUSE 11.0 too), both have normal internet access when WPA encription is used.

Can someone help me solve this problem?

[MikeTbob]

Is the Device recognized and set up properly? Do you have wpa_supplicant installed on both machines? Can you copy the wpa_supplicant.conf from the working machine to the non working machine?

[blnl]

Could you point me to the location of wpa_supplicant.conf?

I believe the device is set up properly because it registers with the wireless assess point. I have exactly the same YAST Network Settings on both machines (at least the settings that are available to the user).

[MikeTbob]

Mine is located at /etc/wpa_supplicant/wpa_supplicant.conf

You can try

whereis wpa_supplicant

[blnl]

/etc/wpa_supplicant/wpa_supplicant.conf is identical on both computers and it contains the following lines:

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel

I have collected some more information from both computers. I hope it contains some useful clues.

On the HEALTHY computer
************************************************** ************************************************** **
iwconfig produces the following output:
(the encryption key is masked, but shows the actual length)

wlan0     IEEE 802.11g  ESSID:"BLNL"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:22:57:1F:A6:F1   
          Bit Rate=48 Mb/s   Tx-Power=27 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B   
          Encryption key:XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX [2]
          Link Quality=71/100  Signal level=-50 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Network Manager shows the following connection info:

************************************************** ************************************************** **


On the FAULTY computer
************************************************** ************************************************** **
iwconfig produces the following output:
(the encryption key is masked, but shows the actual length)

eth1      IEEE 802.11g  ESSID:"BLNL"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:22:57:1F:A6:F1   
          Bit Rate:54 Mb/s   Tx-Power=20 dBm   Sensitivity=8/0  
          Retry limit:7   RTS thr:off   Fragment thr:off
          Encryption key:XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX   Security mode:open
          Power Management:off
          Link Quality=95/100  Signal level=-31 dBm  Noise level=-86 dBm
          Rx invalid nwid:0  Rx invalid crypt:111  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:2

Network Manager shows the following connection info:

************************************************** ************************************************** **

It seems to me that the faulty computer is applying the wrong key.
Is the key not to short for WPA encryption?

[MikeTbob]

On my system, I have all my settings in /etc/wpa_supplicant/wpa_supplicant.conf,
I have edited my passkey and SSID, but this what mine looks like...and btw I do not use network manager, I use WICD, which in my opinion is the better tool. Maybe you can install that and give it a try. Make sure you are in the Wheel group too.

# This is a network block that connects to any unsecured access point.
# We give it a low priority so any defined blocks are preferred.
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
ap_scan=1
network={
  ssid="SSIDNAME"
  proto=WPA
  key_mgmt=WPA-PSK
  pairwise=CCMP TKIP
  group=CCMP TKIP WEP104 WEP40
  psk="XXXXXXXXXX"
  priority=2
}

Are you using DHCP to get your IP's or are you assigning them manually?

[blnl]

Thanks, I'll give it a try!
Yes, I use DHCP, but the IP addresses are linked to the MAC addresses. So in that way it is a fixed IP address.

[blnl]

After installing WICD, the problem still exists.
I get connected to wireless access point but no Internet, no e-mail, no updates.


By the way, WICD did not change my wpa_supplicant.conf. It still contains the same two lines.

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel

I manually entered the information that you gave me in wpa_supplicant.conf:

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
ap_scan=1
network={
  ssid="SSIDNAME"
  proto=WPA
  key_mgmt=WPA-PSK
  pairwise=CCMP TKIP
  group=CCMP TKIP WEP104 WEP40
  psk="XXXXXXXXXX"
  priority=2
}

It also did not help. I still get connected, but no Internet access.


PS: I notice that iwconfig reports Rx invalid crypt:111.
Could this be a clue to my problem?

[MikeTbob]

Thanks, I'll give it a try!
Yes, I use DHCP, but the IP addresses are linked to the MAC addresses. So in that way it is a fixed IP address.

I don't know what this means really....any way you can unset this....just to see if it could be the problem? Just let DHCP assign an IP address all by itself.
You did change the SSID and psk in the example I should you right?

[blnl]

There is a check box in my router that says Fix IP. That means when DHCP assigns IP address to a client. I can enable that check box, so each time this client will get that same IP address.
I need this for NFS, because if my clients always get different IP addresses, I can't mount my NFS folders. (So, in fact I have fixed IP addresses.)

Yes, I can disable it.
I have done as you suggested. It did not help.

Sorry, copy paste habit. Yes, I entered correct SSID and PSK in wpa_supplicant.conf.

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
ap_scan=1
network={
  ssid="BLNL"
  proto=WPA
  key_mgmt=WPA-PSK
  pairwise=CCMP TKIP
  group=CCMP TKIP WEP104 WEP40
  psk="MY_PSK_KEY"
  priority=2
}