WEP key issues

I have been successfully using wireless over an unsecured network. Then I tried to connect to my home network with a WEP key, and, following this post I managed to get it to work with
sudo iwconfig wlan0 essid MYESSID key [1] XXXXXXXXXX
sudo dhclient wlan0
After rebooting and suspending successfully several times, I suspended again and got
Error for wireless request "Set Encode" (8B2A) :
SET failed on device wlan0 ; Invalid argument
whenever I tried the iwconfig command. (This was the error message I had been getting previously, before putting [1] in the iwconfig command.) Now, dhclient just hangs. I am really confused why this suddenly stopped working. I didn't do any updates between when it was working and when it wasn't. I don't know where to look for more specific error messages; dmesg and /var/log/syslog.log are unhelpful.
Using [2], [3], or [4] instead of [1] prevents the error message from being output, but dhclient also hangs. In either case, iwlist wlan0 key lists all four keys as "off", even though I tried setting iwconfig wlan0 key on. Is this supposed to happen?
My card is BCM4322 and I am using broadcom-wl from the AUR.
Any insight would be appreciated!

One of the problems with WEP is that the actual standard relies on a 10 character HEX key for 40bit WEP and a 26 character HEX key for 128bit WEP.
In order to make things easier for people, vendors use certain algorithms to convert simple alphanumeric passwords (or passphrases) into HEX keys, thus enabling people to use simple memorable WEP password rather than lengthy HEX keys.
The problem is that different vendors use different algorithms to generate the HEX key and therefore a ASCII password on an AEBS will be hashed differently on a Netgear client and vice versa.
One thing is a 13 character 128 bit WEP password will be hashed by all vendors in the same way (if you use 40bit WEP then a 5 character password is required).
Though sometimes not even that works and the HEX key must be used regardless.
Accessing a Airport Network with a Windows XP PC or laptop (with XP SP2)
http://www.ifelix.co.uk/tech/1011.html
Accessing a Airport Network with a Windows XP PC or laptop (with XP SP1)
http://www.ifelix.co.uk/tech/1010.html
iFelix

Similar Messages

  • How to view my WEP Key ?

    I need to connect to my Airport Extreme Wireless Network from a WIndow XP configured Macbook.
    WIndows requires the Hexadecimal WEP key to connect.
    How do i get this?
    To be sure, i have read many similar questions on this forum and tried :
    - The network preference panel. The "show password" tick option remains grayed out.
    - The Airport utility. The "equivalent network password" on the Base Station meny remains grayed out.
    - The Keychain access utility. I can only find the alphabetic passord, not the hexadecimal WEP key (of course tried to enter the alphabetic one, but did not work, so i assume it is expecting the hexadecimal one....).
    - In one of the posts, the contributor is bemoaning about an upgrade on snow leopard that makes getting to view the WEP key absurdly complicated. He provides a link :
    http://www.adamriggins.com/2009/11/16/how-to-view-saved-wifi-passwords-in-osx-sn ow-leopard/
    ... which unfortunately is not working anymore...
    I do clearly remember easily retrieving the WEP key 2 or 3 years ago, maybe from OS leopard at the time. I don't quite understand why it's been made so difficult now. Was there a security issue ? then is there an Apple note summarizing those facts and recommanding steps for previously set networks ?
    Anyone who can help on this is very welcome.
    Thanks in advance
    YM

    well first of all why are you using wep? don't you realize that all wep networks can be cracked in 15 minutes?
    older versions of windows xp do not know WPA/WPA2 if you are running the latest service pack then it should support WPA or WPA2
    if for the life of you cannot determine the WEP password no matter how hard you try. i found mine by going into keychain and clicked on show password and there was my wifi password
    then you might as well just download the latest version of airport utility, write down all the important settings, and then use the reset button to erase everything and then reconfigure it from scratch. and then you will know your password.
    while you are there, if you can turn on wpa, by all means turn it on

  • WEP password issues

    Hello
    Setting up a mixed PC and iMac wireless network.
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    Reset network to unsecured and the Mac logs on fine. Reset WEP password and it's a no go again. Router is a Zycxel, iMac is an intel dual core.
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    Hi,
    My mate has a Netgear DG834Gv2 wireless modem configured with WEP 128bit HEX password.
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    I have attempted all the 3 WEP password prompts:
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    2) WEP 128 HEX
    3) WEP ASCII
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  • What is a WEP key and where do I find it?

    Any dumbed down help would be greatly appreciated because I'm close to returning the base station time capsule thing. I can connect macs because I know the password, but friends with PCs can't connect, I can't connect a netbook or a blackberry because they all request this wep key. I can't find it and I don't know what it is. Sorry for being stupid, but I'm a loss. Thank you.

    -Connect the ethernet form the windows PC to the Time Capsule.
    -Update the Windows Computer to SP3 and then head to the Microsoft Update Support Site and then search WPA Patch or WPA 2 Patch
    -Download and Install the patch
    -discount the ethernet from the Time Capsule and try to rejoin the wireless network
    -If still having issues then change the Time Capsule security settings
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    Step to do this. On Mac
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    -Now that we are in the Utility Folder please find a application called *Airport Utility* (Not airport admin utility)
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    -In The bottom left hand you will see a button that says *Manual Setup* please click on it.
    -Once done reading the configuration file you should see the *Summary Page*
    -Now there are some tab's please click on the *Wireless Tab*
    -Now you should see lots of info don't worry we only need to change one thing and that the wireless security
    -Right now it should say *WPA / WPA 2 Personal*
    -PLEASE HOLD OPTION and use the MOUSE TO CLICK ON THE DROP DOWN FEILD
    -Now you should see a a few security protocol Please select the *WEP (Transitional Security Network)*
    -Enter a New Password this password may need to be 8 or 13 numbers / letters
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    -NOTE: You may have to reselect your network using airport
    -This Should Solve The Issues Let Me Know What Happen.

  • Macbook not access work or home networks with wep key

    I have just purchased a Macbook. It is to be used for work and home purposes. The work network is a given, and can not be changed. It requires a wep key that is 26 charcters long. When I input this via the Network instructions on my Macbook, it is not recognized. I have tried putting the prefix '$' in front, and '0x', and '0X' and placing in '"' (double quotes) and NO LUCK! I can't get into the network. This is no issue with multiple Windows PC's that I have. I can also access via pocket PC, and Cingular 8125 smartphone, but not Macbook.
    At home, I can not access my network, a 2wire router, without disabling the wep key. Not acceptable. I have 2 Windows PC's that work fine on this network, with a 13 character wep key. Have tried the $ and all the other hints and no luck.
    Suggestions please! I purchased this Macbook to be able to show that it could be a more reliable and productive machine, working in the office environment. So far, can't get into the office environment!
    Thanks
    Macbook   Mac OS X (10.4.6)  

    Ok, some progress, but not in yet. I was able to "connect", but have no Internet connection. On the "Network Diagnostics", I have a green light for "AirPort", "Airport Settings", "Network Settings", BUT I have a red light for "ISP", "Internet" and "Server". I checked by "Sharing" settings, and have the Firewall On, since I know that the company requires such (tried with it off, and same status). Are there some ports I need to open? What other steps do I need to take to get beyond "connected" and really access the internet??
    Thanks,

  • Non-ASCII WIFI Hex WEP Key in iPhone 1.1.2

    I am struggling to connect to my employer's WIFI network. I was able to do this back with older firmware of the iPhone when it would let me specify that the WEP key was Hex. That option doesn't seem to exist anymore.
    My employer's key is "1111111111" but it doesn't have an ASCII equivalent that can be typed using the iPhone keyboard. I've looked around and some people mention that if you put a "$" in front of the hex key that it will then force the iPhone to treat it like hex but that doesn't seem to be true.
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    Thank you,
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    Matt Cooper1,
    WEP Password, and type password means the Mac is seeing it as ASCII password not a hex.
    Is your network using 128-bit or 40-bit encryption?
    If using 40-bit the ASCII password should be 5 characters, and 128-bit 13 characters to avoid potential hashing issues.
    This article discusses that in the "Multiplatform issue" and "Avoiding the issue" sections:
    http://docs.info.apple.com/article.html?artnum=108058
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  • Help? Can I change my WEP key on my router?

    Hi All...
    I'm a newbie to these forums and I have a question... Can I change my WEP key on my FiOS wireless router?  (Actiontec MI424-WR Rev. D)
    My neighbor, who also watches our dog when we go on holiday, has been using my internet from his house.  He freely admitted this.  My FiOS is much faster than his throttled Comcast and since he's a power user (torrents) he frequently uses my internet connection for all his massive downloads.  His usage knocks me off PS3 and noticeably slows my internet speeds down.
    I know he has my IP and WEP since he spends weeks at a time in my house.  I'd like to change my WEP key and keep it hidden from him.  
    How can I kick him off and prevent him from hopping back on?
    Thanks in advance.
    Emma
    Solved!
    Go to Solution.

    Well... theft of services issues aside since what your neighbor is doing is illegal ...
    I agree with Justin.   Go with a WPA2 connection and use a reasonably long and complex password.    I'd change the SSID as well although that's not absolutely required.   Also make sure you change the userid/password on the router as well in case they know it.   Don't get wrapped up in hiding the SSID or turning on Mac authentication -- while they don't necessarily hurt, they don't add anything appreciable to the equation and just make your own life more difficult.
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    Oh ... and it might be time to get the key back and find a new dog sitter. 

  • Still Having Problem With WEP Key

    Hi:
    I have been reading this forum and looking for WEP related topic however I still haven't solved my problem.  So here is my problem and see if anyone from this forum can help.
    I set my linksys to make WEP key mandatory.  I used 128 bit key and was able to generate 104 bit key (26 hex digits).  It works fine on my wife laptop (COMPAQ), it can communicate using this key. However it never works on my IBM/Lenovo T43P.  The only difference is I am running Funk/Juniper Odyssey Client Manager software.  Yes I have entered the 26 hex key properly and still doesn't work.  It does work however if I disable the WEP key.  Any idea what the problem is?
    I took my laptop to my brothers house who is using DLINK router and use a different WEP and it works fine.  So it seems like this WEP key doesn't work with my Linksys router.  By the way my Linksys router is BEFW11S4.
    Thanks,
    Jim

    If your one laptop is already working iwth same 28bits WEP key ..... i dont think so that there is any issue with router ......
    You can configure the Odyssey Client Manager as per the settings in the router ....
    Still if you want you can use WEP 64 bits key on the router ...check on both the laptops if they are able to access interent .....

  • Printer does accept the WEP key. any Solution, c309g wireless setup

    Hi, 
    i have a Photosmart c309 g printer. 
    I have been on phone with the tech for almost 8 hrs but with no solution. The end result being, they suggested to replace the printer.
    when i and also with assistance with the technician, ran the Wireless setup wizard,  my network is detected. when i hit ok on it, it prompts for WEP. Then i enter it, it displays connecting and then displays "ERROR " "Invalid WEP". 
    Below are the other few steps i tried......... >
    a> the printer was RESET , i guess it was SemiFull Reset . Then we tried running the wireless setup wizard, and it ended up with the same error  "ERROR " "Invalid WEP". 
    b> we installed through USB to have it in wireless .... the same issue.
    c> the tech asked me have the WEP key changed. I called my Router mfd and got the WEP key changed to only Numbers ( earlier it was alphanumeric ) , we then tried running the wireless setup wizard .. we got the same error message.
    d> We also tried Manually adding the IP, subnet mask and default gateway .... but the ping does not work. It says 100% loss.
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    I am returning the printer to the stores in a day or 2days. Let me know if "returning the printer " is the right thing to do or is there anyone over here who could suggest me steps to resolve it.
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    Let's try an experiment.  Since I'm not sure of your exact configuration, I'd like  you to try some one of the following:
    If your Linksys wireless-router is also your ADSL modem -- disconnect the telephone line from the Linksys wireless-router and then power cycle the Linksys (unplug power, wait 30 seconds, plug power back in).  Leave the telephone line unplugged.
    -- or --
    If your ADSL modem is separate from your Linksys wireless-router, disconnect the LAN cable between the ADSL modem and the Linksys wireless-router and then power cycle the Linksys (unplug power, wait 30 seconds, plug power back in).  Leave the LAN cable disconnected.
    Power cycle the printer.  Wait 60 seconds for the wireless-router to power up completely and then run the C309g Wireless Setup Wizard from the printer's front panel (Setup -> Network -> Wireless Setup Wizard).
    If the printer connected successfully, then there is one more change we need to make and that is to set a static IP address for the printer.
    Open the printer's internal web page by browsing to its IP address.  Select Networking and then Wireless (802.11).  Under the IPv4 Configuration tab, select Manual IP:
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    For Manual Subnet Mask, use 255.255.255.0
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    Finish up by installing the SW on the computers you want to print from.  One more suggestion -- do not install the HP Customer Participation Program.
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    ( While I'm an embedded wireless systems engineer at work, on this forum I do not represent my former employer, Hewlett-Packard, or my current employer, Microsoft )
    + Click the White Kudos star on the left as a way to say "thank you" for helpful posts.

  • Iphone keeps forgetting wifi wep key

    last Thursday  I took mi  iphone 4s to  apple store otay ranch San diego CA  my wifi was  greyed out  & said  no  wiffi   what  they  did  is they  restore  my 
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    There are a couple of threads on this issue.  I did a search on "forgot wep key".  I'd take a look at this one to get some ideas
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    If you continue to have difficulties, please contact our support group using the "Contact Us" link below.
    This didn't answer your question or issue? Find more help at Contact Us.
    Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

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