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Hacking a wireless router?

Discussion in 'Electronic Design' started by [email protected], Oct 23, 2005.

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  1. Guest

    I picked up a Dell TrueMobile 2300 wireless broadband router at the
    local thrift store for $1.98 last week. I played around with it long enough to
    come to the conclusion that since I don't have a broadband modem, the router is
    useless for me.

    I had hoped that I could simply leave the ethernet port that should have
    gone to a modem unconnected and still use the router as a wireless hub. That
    didn't seem to work. I plugged my computer into one of the "normal" ethernet
    ports and tried to go through the installation procedure in the manual. Nothing
    I tried seemed to work. I couldn't get the router to talk to me at all.

    My working theory so far is that there is a somewhat sophisticated
    processor inside the router that stops during it's boot phase if it can't find a
    broadband modem connected to it.

    Is that the case? Or is my newfound plaything simply braindead?

    Jim
     

  2. With every home-networking router I've had (wired and wireless), I was able
    to ping the router itself from the network ports, regardless of whether it
    was connected to something upstream. I think your $1.98 has gone the way of
    the other dot-com investments of its era.
     
  3. Guest

    Hadn't thought of that. I think the default address is in the docs
    somewhere.

    ..............

    Pinged 192.168.2.1 (the default) and it just timed out. 8-(

    Question... When I "ping" from a command line prompt, does the ping
    always go out over the ethernet port? What if I have a dial-up session open at
    the same time?

    Jim
     
  4. When you try to access any IP address, the TCP/IP stack will look in it's
    Routing Table and determine which network adapter to transmit your message
    from, and which IP address to specifically transmit it to (unknown IP
    addresses are sent to your local gateway, known ones are transmitted
    directly). You can look in your own routing table by using the command line
    "route print". You can also make manual changes to the routing table, but
    usually it is easier to just change your IP address and let the TCP/IP stack
    update the routing table.

    It is quite possible that your routing table doesn't allow your message to
    be sent out your Ethernet adapter, and thus is arriving at the wrong
    destination. The router is likely fine. Try setting your local IP address
    to 192.168.2.2 and see if you still can't ping or access the router.
     
  5. Mike Young

    Mike Young Guest

    If the router supports DHCP, configure eth0 for DHCP and reboot. If it
    doesn't, manually assign a class D address on the same network (e.g.:
    192.168.2.1).

    `ipconfig /all` will tell you quite a bit about how your network is setup.

    `route print` will tell you what traffic goes through which interface.

    `traceroute` tells you shows each hop on ...

    I think you're in over your head, though.

    Me personally, I would just spend the $20 for a NIB NATS router and hub. You
    might also try a hard reset on the device before giving up. I would probably
    strip the discrete components and call it a wash. Heat the board in a
    toaster oven to reflow the solder, and give it a good whack. Whatever falls
    off are keepers; the rest go in the trash with the board. Standoffs and
    hardware go in the parts jar. (Don't forget: Buy a new toaster oven for the
    kitchen. And dress appropriately before flinging solder everywhere.)
     
  6. Jim Thompson

    Jim Thompson Guest

    [snip]

    Isn't the more common default 192.168.0.1 ??

    You might try that.

    ...Jim Thompson
     
  7. Jasen Betts

    Jasen Betts Guest

    the ping goes out whichever interface is configured for that IP address.
    so your ethernet card is configured as 192.168.2.2 (etc...) it'll go that way.

    stick your head roud the back of the computer ans watch the activity light
    on your ethernet port.

    Bye.
    Jasen
     
  8. Guest

    Like Homer (Simpson) said when the guy at the boat rental office told
    him he couldn't operate a boat while intoxicated, "I take that as a challenge!"
    More good advice, never fry bacon before you put your pants on.

    Jim
     
  9. Guest

    Tried both of them. Still timed out. Once I find my DOS reference book
    and refresh my memory on how to redirect command line screen outputs to a file,
    I'll paste the results of "route print" in a reply.

    Jim
     
  10. Guest

    The activity light blinks about fifteen times at a once per second rate
    with very short blinks, but only immediately after the router is reset. After
    that, the activity light stops and doesn't resume even for the "ping" command.

    Looks like the router is trying to communicate but my computer isn't
    cooperating.

    Jim
     
  11. Ken Taylor

    Ken Taylor Guest

    Jim. maybe you've tried, but according to:
    http://support.dell.com/support/top...ument?dn=1089191&l=en&langid=1&c=us&cs=&s=gen

    use your browser to go to my.router and you should get a login page: 'admin'
    and 'admin' are the default username/password.

    Ken
     
  12. Have you tried a hard reset? If you haven't the prior owner could have set
    the default address to any unknown address and made it inaccessible. Hard
    resets are normally done by keeping the device powered on and then pressing
    a difficult-to-access momentary switch on the device. You may need to hold
    the momentary switch down for a few seconds.

    To redirect std output from the screen to a file, use the ">" character.
    eg: "route print > MyRoutingTable.txt". If you wish to append std output
    from the screen to a (possibly) pre-existing file, use two of the ">"
    characters. eg: "route print >> MyRoutingTable.txt"


     
  13. Guest

    Yep. The manual gives details for that. I tried it several times.
    Still no joy but I'm not giving up.
    Thanks, I remembered | or "pipe" but > was eluding me.

    The router will set its self up If I could just access it as a web site.
    Perhaps I could find the set-up files for a generic broadband modem and use them
    to configure the ethernet port along with TCP/IP protocols and such.

    Jim
     
  14. Guest

    That's the first thing I tried. The proceedure is written on a label on
    the bottom of the router. IE couldn't find my.router either my its name or the
    192.168.2.1 address. I'm beginning to think that I just don't have all the
    protocols set properly for the ethernet port.

    Jim
     
  15. On Mon, 24 Oct 2005 11:45:51 GMT,
    Perhaps you should first try out your computer with a WL router that you
    know works.

    robert
     
  16. Nick.

    Nick. Guest

    Can you use it in place of a normal hub? (forget wireless, IP addresses
    etc. at the mo, this should test the hardware ports)

    Is your ethernet port set to use DHCP (get an IP address automatically)?

    It may be that the router has been set to disable DHCP and given an
    arbitary IP address. You may have to reset the router to factory default
    (notmally holding a reset button for a while)

    If the router has been reset and your ethernet card set to dhcp, you
    should be ale to run ipconfig in a dos prompt (assuming you are using
    Windoze) and the ethernet interface should have a 192.168.2.something
    address.

    Is your browser configured to use a proxy server? If so, turn it off while
    trying to log in to the router.
     
  17. Zak

    Zak Guest

    You can probably use it as an access point.
    Google for openwrt and Dell TrueMobile 2300 on how to use the processor
    in different ways. Good chance that running a DHCP server on your
    computer will give teh router an address...


    Thomas
     
  18. Install Ethereal on your computer, start it collecting packets, then turnon
    the router.
    Normally equipment starts sending some packets to poll for duplicate IP
    address: that tells you its own MAC and IP addres.

    Regards,
    Arie de Muynck
     
  19. Guest

    OK. I now have a file of captured packets. There is a lot of stuff
    going on but I can't figure it all out yet. I saved the file and when I reload
    it back into Ethereal, it shows up the same way it did when it was live.

    If I posted the file somewhere, (it's only 3 KB) could you look at it
    and give me some pointers as to what is going on?

    It's clear that the router *isn't* dead, it's just looking for things
    that my computer isn't (yet) able to give it.

    Jim
     
  20. Sure. Post it someplace.
     
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