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Thread: can connect to network, but not the internet

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  1. 08-19-2007, 07:22 PM #1
    gangstazar
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    Default can connect to network, but not the internet

    Hi everyone, I have tried everything possible, I have searched the forums etc. but I have not been able to solve this problem I am having. In backtrack, I can connect to my network but I cannot connect to the internet. I am using the ipw3945 driver found on the livecd, and i connect using these commands:

    Code:
    iwconfig eth1 mode managed

then

ifconfig eth1 down
iwconfig eth1 essid xxxx key xxxx
ifconfig eth1 up
dhcpcd eth1
    it looks like it works, the icon in the taskbar comes up saying i am connected, it shows my ip address, mac address, signal strength, etc.. but I cannot connect to the internet! I open up firefox and can never reach any webpages. If anyone could help me that would be great, I know most people have no problems with this wireless card, so I must be doing something wrong. Thank you in advance!
  2. 08-19-2007, 07:24 PM #2
    streaker69
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    Default

    Quote Originally Posted by gangstazar View Post
    Hi everyone, I have tried everything possible, I have searched the forums etc. but I have not been able to solve this problem I am having. In backtrack, I can connect to my network but I cannot connect to the internet. I am using the ipw3945 driver found on the livecd, and i connect using these commands:

    Code:
    iwconfig eth1 mode managed

then

ifconfig eth1 down
iwconfig eth1 essid xxxx key xxxx
ifconfig eth1 up
dhcpcd eth1
    it looks like it works, the icon in the taskbar comes up saying i am connected, it shows my ip address, mac address, signal strength, etc.. but I cannot connect to the internet! I open up firefox and can never reach any webpages. If anyone could help me that would be great, I know most people have no problems with this wireless card, so I must be doing something wrong. Thank you in advance!
    Are you receiving a valid IP address for your network?

    Are you receiving a valid DNS server for your network?

    Are you receiving a valid Default Gateway for your network?
    A third party security audit is the IT equivalent of a colonoscopy. It's long, intrusive, very uncomfortable, and when it's done, you'll have seen things you really didn't want to see, and you'll never forget that you've had one.
  3. 08-19-2007, 08:28 PM #3
    gangstazar
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    Hi thanks very much for the quick response, here is the output from ifconfig and iwconfig, i couldnt figure out how to check the dns addresses but i have the gateway and ip addres, although the ip address is a local one and not an isp assigned one im not sure if that is normal.

    Code:
    ifconfig
Link encap:Ethernet  HWaddr 00:13:02:-------
          inet addr:192.168.1.101  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::213:2ff:fea9:------ Scope:Link
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32 errors:0 dropped:149 overruns:0 frame:0
          TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2796 (2.7 KiB)  TX bytes:2849 (2.7 KiB)
          Interrupt:11 Base address:0x2000 Memory:efcff000-efcfffff
    Code:
    iwconfig
 IEEE 802.11b  ESSID:"--------------"
          Mode:Managed  Frequency:2.437 GHz  Access Point: 00:0C:41:8B:---------
          Bit Rate:11 Mb/s   Tx-Power:15 dBm
          Retry limit:15   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=67/100  Signal level=-65 dBm  Noise level=-66 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:151   Missed beacon:0
    the ----- are where i censored out personal information. also one thing, i saw in one post to run pppoe setup, i ran this and it said network down, not sure what that means. thanks again for any help.
  4. 08-19-2007, 08:31 PM #4
    streaker69
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    Are you able to ping the IP address of your Default Gateway?
    A third party security audit is the IT equivalent of a colonoscopy. It's long, intrusive, very uncomfortable, and when it's done, you'll have seen things you really didn't want to see, and you'll never forget that you've had one.
  5. 08-19-2007, 08:44 PM #5
    shamanvirtuel
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    and why there's no enc key set on your card ?

    is it an open network ?

    could you post 'iwlist eth1 scan' output ?
    Watch your back, your packetz will belong to me soon... xD

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  6. 08-19-2007, 08:46 PM #6
    -=Xploitz=-
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    mac filtering perhaps???

    Also try deleting the contents of your /etc/dhcpc folder BEFORE running your above commands.
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  7. 08-19-2007, 09:18 PM #7
    PrairieFire
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    Noticed as Shaman did your iwconfig output looks odd for a network protected with a key.

    Just tested this method to verify it works with my IPW3945 so try this:

    Navigate to K menu -> Backtrack -> Radio Network Analysis -> 80211 -> Misc -> Load IPW3945

    Code:
    iwconfig eth1 essid linksys key 1B05467835 
dhcpcd eth1
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