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Old 03-31-2008, 05:19 PM   #1
docbryantusn
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Unhappy Wireless LAN


I am pretty much clueless about operating systems and such, so I tried a couple of versions of Linux: Knoppix and Slax from live CD's. In both cases I could not get on to the internet because they would not recognize my wireless connection, and I'm not confident enough to go mucking around in the system.

How do I get my wireless to work?

Another thing is that I can't locate any of the existing files on my computer after I load Linux.

I know. I'm hopeless.
 
Old 03-31-2008, 05:55 PM   #2
cmnorton
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More info needed

It would help to know what kind of hardware you have, laptop or non-laptop, wireless card, CPU, and RAM.

If you've got a P IV (Pentium IV) CPU and 512 MB RAM, you should be able to use Ubuntu or XUbuntu, whose wireless is in most cases self-configuring. It's a little more complicated if you are WEP-encrypted.

Depending on your distribution, your network config files are almost always under /etc, mine are under /etc/network (Ubuntu). On Red Hat the configuration files are under /etc/sysconfig/networking.
 
Old 03-31-2008, 06:22 PM   #3
docbryantusn
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Compaq Presario C500 laptop with integrated wireless and intel Celeron M. Not sure about the WEP encryption.
 
Old 03-31-2008, 06:43 PM   #4
phpnewb72
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Ubuntu 7.10 should be able to pick up your wireless card and set it up once you provide the encryption password. I have a presario and an inspiron that are both older than your C500 that work with ubuntu 7.10.
 
Old 04-01-2008, 01:47 AM   #5
post_erasmus
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cmnorton,
Could you point me in the direction of a guide to using WEP in Ubuntu (7.10)? I've got my wireless card up and running and my router showing up in Network Manager, but every time I enter the key (64 bit hex) it comes back asking for a 128-bit passphrase. Thanks.
 
Old 04-01-2008, 12:03 PM   #6
cmnorton
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Depends on your distro

I am not sure which distro you are using. I am only familiar with Network Manager on Ubuntu.

Network Manager detects your wireless network is web-encrypted, and prompts you for a information. It is at that point you have to tell Network Manager what you are supplying. I have used my original ascii passphrase and Network Manager has wep-encrypted it, and it was accepted by my Linksys wireless router.

If your network is expecting a passphrase, my guess is you are being prompted for whatever generated the hex key, the ascii text.
 
Old 04-02-2008, 02:30 AM   #7
post_erasmus
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I am using the i86 desktop release of Gutsy.

The hex key is actually printed on a plate that is screwed to my router. (I'm not sure if that's relevant, but I try to be thorough where I can.)

How might I be able to derive the ascii text that generated the key from the hex key that I already have?
 
Old 04-02-2008, 03:17 AM   #8
jschiwal
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You may try editing the ifcfg-ethN file directly. (look in /etc/sysconfig/networking/ for an ifcfg-* file where the rest of the name matches your device)
Are you certain that the router doesn't use wpa-psk. Using WPA instead of WEP would be advisable since WEP is thoroughly broken. A war driver will be able to crack it in 1-2 minutes. Maybe faster than it would take you to authenticate using a known key!

The router may have a web interface where you can change the encryption used and update the key with a new one. They should be changed occasionally anyway.

The text passphrase probably goes thought some complicated hoops to derive a 32 byte hash value. It is probably a one way hash, which means that you can't go backwards.

Last edited by jschiwal; 04-02-2008 at 03:20 AM.
 
  


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