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Thread: Connect to Wireless Network, no internet connection

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  1. #1
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    Default Connect to Wireless Network, no internet connection

    Hi, I recently installed Backtrack 5 R3 on my Toshiba NB255 laptop.

    I can connect to my wireless network with wicd, but theres no internet access. Ping fails to connect and firefox can't connect to any servers either. After doing iwconfig and ifconfig, I can't see anything out of the ordinary, no dropped or erroneous packets according to ifconfig.

    When I connect through ethernet to my router, wicd stalls at the ip assignment step.

    I've tried starting networking through
    Code:
    start networking
    and
    Code:
    /etc/init.d/networking start
    , but I can't get it to work.

    I'm getting good signal, so that isn't it.

    Again, I successfully connect to the network, just no internet. Any ideas?

  2. #2
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    Default Re: Connect to Wireless Network, no internet connection

    Also possibly worth noting, when I run a LAN device discovery tool, such as netdiscover, I am only able to find the router itself (192.168.0.1).

    Any help would be appreciated!

  3. #3
    Very good friend of the forum maverik35's Avatar
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    Default Re: Connect to Wireless Network, no internet connection

    Would you please post the ifconfig and iwconfig output?Are you using HDD install, VM, USB?..The wifi device chipset and type of authentication used (wpa-wpa2, wep, open)?

    Luck.

  4. #4
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    Default Re: Connect to Wireless Network, no internet connection

    I have a HDD install, alongside Ubuntu and Windows.

    I'm in a WEP encrypted network, and I have the encryption settings correctly configured

    Code:
    Iwconfig
    
    wlan0     IEEE 802.11bgn  ESSID:[[key]]  
              Mode:Managed  Frequency:2.412 GHz  Access Point: [[Mac]]   
              Bit Rate=54 Mb/s   Tx-Power=15 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Encryption key:[[key]]
              Power Management:on
              Link Quality=51/70  Signal level=-59 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:0  Invalid misc:8   Missed beacon:0
    Code:
    Ifconfig
    
    lo        Link encap:Local Loopback  
              inet addr:127.0.0.1  Mask:255.0.0.0
              inet6 addr: ::1/128 Scope:Host
              UP LOOPBACK RUNNING  MTU:16436  Metric:1
              RX packets:22 errors:0 dropped:0 overruns:0 frame:0
              TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:1553 (1.5 KB)  TX bytes:1553 (1.5 KB)
    
    wlan0     Link encap:Ethernet  HWaddr [[mac]]  
              inet addr:192.168.0.104  Bcast:192.168.0.255  Mask:255.255.255.0
              inet6 addr: [[address]] Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:268 errors:0 dropped:0 overruns:0 frame:0
              TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:49888 (49.8 KB)  TX bytes:1312 (1.3 KB)

    I'm not sure what lo could be to be honest, so I posted it anyway!

  5. #5
    Very good friend of the forum maverik35's Avatar
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    Default Re: Connect to Wireless Network, no internet connection

    Quote Originally Posted by redness1234 View Post
    I have a HDD install, alongside Ubuntu and Windows.

    I'm in a WEP encrypted network, and I have the encryption settings correctly configured

    Code:
    Iwconfig
    
    wlan0     IEEE 802.11bgn  ESSID:[[key]]  
              Mode:Managed  Frequency:2.412 GHz  Access Point: [[Mac]]   
              Bit Rate=54 Mb/s   Tx-Power=15 dBm   
              Retry  long limit:7   RTS thr:off   Fragment thr:off
              Encryption key:[[key]]
              Power Management:on
              Link Quality=51/70  Signal level=-59 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:0  Invalid misc:8   Missed beacon:0
    Code:
    Ifconfig
    
    lo        Link encap:Local Loopback  
              inet addr:127.0.0.1  Mask:255.0.0.0
              inet6 addr: ::1/128 Scope:Host
              UP LOOPBACK RUNNING  MTU:16436  Metric:1
              RX packets:22 errors:0 dropped:0 overruns:0 frame:0
              TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:0 
              RX bytes:1553 (1.5 KB)  TX bytes:1553 (1.5 KB)
    
    wlan0     Link encap:Ethernet  HWaddr [[mac]]  
              inet addr:192.168.0.104  Bcast:192.168.0.255  Mask:255.255.255.0
              inet6 addr: [[address]] Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:268 errors:0 dropped:0 overruns:0 frame:0
              TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:49888 (49.8 KB)  TX bytes:1312 (1.3 KB)

    I'm not sure what lo could be to be honest, so I posted it anyway!
    I do not see anything wrong, as a matter of fact, wlan0 has been authenticated and it was offered a valid ip (192.168.0.104), this ip offered came from DHCP server...Link quality is little over 70% (-59dbi is quite good)..

    Please, try to do this: Boot up with LiveCD, and try to connect to router..See if it works...

  6. #6
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    Default Re: Connect to Wireless Network, no internet connection

    you also might make sure wicd is set to wlan0 and eth0 in pref's as default i think is wlan1 and eth1
    if you were just trying to get wicd to scan

  7. #7
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    Default Re: Connect to Wireless Network, no internet connection

    When booting from live disk, I started networking with "start networking" and then opened wicd. When I opened it I got an error saying "Could not connect to wicd's D-bus interface. Check the wicd log for error messages." After I clicked okay, everything opened normally.

    I connected again successfully to the network but still no internet.

  8. #8
    Senior Member VulpiArgenti's Avatar
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    Default Re: Connect to Wireless Network, no internet connection

    Association, authentication and DHCP all seem to be working. This suggests the problem is in route and/or dns. There are many tutorials on how to troubleshoot this eg http://www.tecmint.com/linux-network...ting-commands/

  9. #9
    Very good friend of the forum maverik35's Avatar
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    Default Re: Connect to Wireless Network, no internet connection

    Make sure you have internet service active or check your router configuration as suggested by VulpiArgenti, I certaily belive the issue is not with BT5...

    By the way, have you tried using ethernet port (Wired)?...

  10. #10
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    Default Re: Connect to Wireless Network, no internet connection

    I have tried other networks and I am getting the same issues surprisingly! I tried ethernet on my home network but it stalls at "getting ip"

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