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Frequent wireless disconnections 802.1X WPA TKIP

We have implemented 3com wireless access points in our network using 802.1X WPA TKIP settings. Windows IAS server is providing the authentication service for the wireless stations; the IAS server is integrated with windows active directory. Furthermore, the wireless stations get the IP from a centralized DHCP server. So far all is working fine. The problem is that Sometimes the wireless stations get authenticated and got the IP from the DHCP server but again disconnected and then start the process again and again. Sometimes the user is successfully authenticated and got the IP but when it disconnect from the wireless it fails to connect again We have setup the access points at different locations in a city. A user successfully authenticated in one location failed to get connected when roam to a different location. Note that all the IAS DHCP and Windows active directory are centralized. Furthermore we the wireless users have verity of laptops like DELL, IBM, Toshiba, HP. Kindly advise.

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Try using predefined IP addresses. Let each pc make it's own IP address and see if the conflicts continue, if they do, post again. :)

Posted on Feb 11, 2007

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1answer

Brother MFC 9840 CDW. How can I connect to wi-Fi?

Full instructions from the Brother website

Set up your Brother machine on a wireless network.

> Click here to see how to find the wireless security information for Windows.
For Macintosh users
> Click here to see how to find the wireless security information for Macintosh.
After checking the network information of your wireless router or access point, go to step 2 to set up your machine on a wireless network.
If your wireless router or access point uses WEP encryption with multiple WEP keys, write down and use only the first WEP key.

2. Set up a Brother machine on a wireless network

To set up your Brother machine on a wireless network:
  1. Connect the power cord to your Brother machine and then connect it to an AC power outlet (electrical socket).
    Turn your Brother machine on.
  2. > Click here to see how to reset the network settings.
  3. Press the Up or Down arrow key to select the following:
    1. Select Network or LAN. Press OK.
    2. Select WLAN. Press OK.
    3. Select Setup Wizard. Press OK.
    4. When WLAN Enable? or Network I/F switched to Wireless appears, enable the wireless network.
      This will start the wireless setup wizard.
  4. The machine will search for your network and display a list of available Network Names (SSIDs).
    When a list of SSIDs appears, press the Up or Down arrow keys to select the SSID you wrote down earlier.
  5. Press OK.
  6. Press the Up or Down arrow key to select one of the options below: If your network is configured for Authentication and Encryption you must match the settings used for your network.
    Available authentication and encryption methods depend on your model.
    • No Authentication or Encryption:
      Select Open System, press OK then select None for Encryption Type? and press OK.
      To apply the settings, select Yes.
    • No Authentication with WEP Encryption:
      Select Open System, press OK then use the Up or Down arrow key to select WEP for the Encryption Type? and press OK.
      Select the appropriate key number and press OK.
      Enter the WEP key (Network Key), then press OK to apply your settings.
      To apply the settings, select Yes.
    • Authentication with WEP Encryption:
      Select Shared Key and press OK.
      Select the appropriate key number and press OK.
      Enter the WEP key (Network Key), then press OK to apply your settings.
      To apply the settings, select Yes.
    • Authentication with WPA/WPA2-PSK (TKIP or AES) Encryption:
      Select WPA/WPA2-PSK, press OK then use the Up or Down arrow key to select TKIP or AES for the Encryption Type? and press OK.
      Enter the WPA/WPA2-PSK password (Network Key), then press OK to apply your settings.
      To apply the settings, select Yes.
    • Authentication with LEAP:
      Select LEAP, press OK.
      Enter the user name and press OK.
      Enter the password (Network Key), then press OK to apply your settings.
      To apply the settings, select Yes.
    • Authentication with EAP-FAX/NONE, EAP-FAQT/MS-CHAPv2, EAP-FAXT/GTC (TKIP or AES Encryption):
      Select EAP-FAST/NONE, EAP-FAST/MSCHAP(EAP-FAST/MS-SHAPv2) or EAP-FAST/GTC, press OK then use the Up or Down arrow key to select TKIP or AES for the Encryption Type? and press OK.
      Enter the user name and press OK.
      Enter the password (Network Key), then press OK to apply your settings.
      To apply the settings, select Yes.
  7. The machine tries to connect to the wireless network you have selected.
    • If your Brother machine connected successfully
      The machine's LCD displays Connected.
    • If the connection failed The machine's LCD displays Connection Fail or Connection NG.
      Make sure your access point is on, and verify your Network Settings collected in Step1.
      Temporarily move your machine as close as possible to the access point or router. Try starting from Step 2-2 again.
  8. The machine will automatically acquire the correct TCP/IP address information from your access point/router if DHCP is enabled (DHCP is normally enabled as default for most access point routers).

    Once the Brother machine is joined to the network and has a valid IP address, the wireless setup is complete.
Videos

https://www.google.com/search?q=Brother+MFC+9840+CDW.+How+can+I+connect+to+wi-Fi%3F

Networking Guide

https://download.brother.com/welcome/doc002260/mfc9840_usaukasa_net_a.pdf

..
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1answer

I want to know how i can make my Linksys Router WRT160N work as access point

Hi,

By default Linksys router behaves as Access point. On some router you have to enable the wireless function.

So the following to configure the router Wireless Access Point

Click the below link
http://192.168.1.1

Now it will ask for username and password

Enter username = ( blank) and password = admin
If you can't login using this credentials then you will have to reset the router

If you logged in . Then click on Wireless > Wireless security

On this screen select

Security Mode : WPA Personal
WPA Algorithm : TKIP
WPA shard Key : "enter a password here"
Group Key Renewal : set to default

Click on save settings. After that restart router .
Now your wireless network is secured and you will have to type the WPA shared key inorder to connect to router when it prompts. You can connect as many devices as you wish since it is a access point

Thanks

Vote me If it helps
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1answer

My Sony vaio has limited access to Internet but all my family's computers working are fine, help

Make sure your connecting to the right network and check if the security type (WEP,WPA,WPA-PSK) and Encryption type (TKIP,AES) setting were the same with the other computers, you can also check the setting on the router to make sure :)
2helpful
2answers

What is a wpa key password

WPA is a type of security for a wirelss router to keep people out of the network without the key password. The password is used to log onto the router and allow the computer to communicate with the router and internet. The key is created using the wireless router settings menu and can be found on the same menu. If you do not know the key then you will need to hook the computer directly up to the router and use the router settings menu to find out what the key is.
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1answer

I have plugged in a wireless adapter for the 360 but...

A red steady light on the adapter means it is ready to be connected to a wireless network. If it fails to connect then the WPA key is not correct.

WPA automatically changes keys on a frequent basis for security purposes. So you need to take note of the SSID (wireless network name) and the Wireless security settings (WPA and passphrase) from the wireless access point/router.

Once you have the wireless network settings on the access-point/router, go to the System area to enter those settings.

If all settings are correct, exit the System area. Your console should now be connected to your wireless network.

Hope this helps! Good luck!
2helpful
1answer

How do i set up a secure network

Hi! you can setup a secure wireless network by accessing the linksys setup page and go to wireless setting, it will ask u what kind of security settings, like, wep, wpa, wpa, use the wpa2 and tkip then set the password, change also the router username and password so that no one can access ur wireless router setup page, only u..
0helpful
1answer

Can't scan

To test the hardware, use the product to copy a document.
1.open the scanner lid.
2.put a document face down on the glass.
3.close the scanner lid.
4.press the copy button.


make sure that the product connects to the network
ethernet connection

1.Disconnect the network cable from the back of the product, and then wait a few seconds.
2.Reconnect the network cable to the back of the product.
3.Make sure the other end of the network cable connects securely to the router or switch
4.Make sure that the lights on the router or switch are on.
5.Continue to "Step three: Print a network configuration page and find the IP address."

wireless network

  1. Make sure that the router or access point is on.
  2. Position the router or access point closer to the product.
  3. On the product, press the setup button , and then select the network option.
  4. Select the wireless setup wizard option. The product searches for the router or access point.
  5. Select the 'enter the new network name'(SSID) option.
  6. Type the service set identifier (SSID) or the name for the wireless network, and then select 'done' . The product searches for the network.
  7. Select the relevant authentication protocol, also called the security mode. Supported protocols include WEP (64 bit and 128 bit) and WPA-PSK (WPA1 or WPA2, AES or TKIP). Networks that do not use an access point or a router, known as ad hoc networks, support WEP encryption only.
  8. If the network uses media access control (MAC) address filtering, make sure that you have the router or access point set to allow the MAC address for the HP product.
  9. Follow the instructions to configure the product for your method of network security:

  10. WPE: Log on to the router or access point from the computer, and then find the wired equivalent policy (WEP) key set within the router or access point. If you specify the WEP by using 10 or 26 hexadecimal characters, make sure that the characters are 0-9 and A-F. Use the on-screen keyboard on the control panel display to type the WEP key on the product.
  11. WPA: Log on to the router or access point from the computer, and then find the Wi-Fi Protected Access (WPA) passphrase set within the router or access point. Use the on-screen keyboard on the control panel display to type the correct WPA passphrase.
make sure that the product is connecting to the network, print a network configuration page from the product and find the IP address on the page.
1.On the product control panel, press the Setup button
2.Select Network , select Network Settings , and then select either Print Network Settings or Print Network Configuration Page . The network configuration page prints
3.Make a note of the IP address for the wired or wireless connection. The IP address should resemble the example: http://192.168.1.1

4.If the computer connects to the Internet using a wired connection, the IP address displays in the Wired section.
5.If the computer connects to the Internet using a wireless connection, the IP address displays in the Wireless section




0helpful
1answer

Zebra QL 420+ wireless printer works only without cipher/TKIP

Hi
With Label Vista
  • Go to Printer Tab
  • Define the com Port settings (use serial or usb)
  • Go to Printer settings

in network tab :
  • Put your network configuration ( IP address or DHCP,submask, gateway; ESSID, port number .....)

In 802.1X WPA
  • Select WPA WPA2
  • Authentification PSK
  • Put the username and password in EAP section
0helpful
1answer

Security connectivity issues

is the PC connection you're able to maintain once upgraded to WPA a PC that is physically connected to the router? if so, that would make sense because WPA (and WEP for that matter) are only wireless security protocols and have no protections for hard-wired connections.

In order to convert your system to WPA security, you must first make sure all of your hardware is WPA compatible (that isWPA Drivers are available for it).

For your PC wireless connection, if you're running Windows XP you can go to the microsoft website and download the WPA client. It is available in the Microsoft Knowledge Base Article 815485. install the update and reboot. you will then be able to enable WPA security on your client.

Then you'll possibly need to update the drivers for your hardware for WPA support (router, wireless NIC, etc) if they did not already come enabled.

next you get to configure the router for WPA. you'll want to make sure you're set to WPA with preshared keys (no authentication server required), use TKIP as the algorhythm, and leave group key renewal at it's default value. and of course Select a key that is not likely to be guessed. write the key down as you'll need to configure your NIC using it.

to configure your NIC, once you're in the configuration menu select WPA-PSK for your authentication, TKIP for the encryption mode, in data encryption set it to TKIP, and in the network key put the key you selected earlier.

At this point you should be able to access your wireless router (or other access point). These instructions were kind of generic since i do not have the specific router you're using available to me, but the settings i discussed should be pretty universal when it comes to WPA security.
0helpful
1answer

Encryption on/off

First you must choose a common encryption strategy for your home network. (Yes I am assuming Home Network)

In most consumer routers you activate encryption on the wireless services of the router. After doing so you must also actiate encryption services on the wireless adapters that communicate with the wireless router. The names of the encryption services in the wireless router and wireless adapter are WPA and WEP. It is important to assure all wireless adapters to connect to the wireless router can handle the encryption chosen because the router will only perform one. There are options within each technique such as the number of bits of the keys -- the longer the better but only as long as the shortest device can support. WPA is preferable to WEP because it was designed to correct weaknesses in the WEP standard and implementation. However if there is even a single device to be connected that cannot do WPA you must do WEP or replace the device WPA in home systems often have a couple of other attribute being WPA-PSK and algorithm of TKIP -- which again every wireless adapter and the wireless router/access point must support.

To procede further in a sane manner you need to identify all wireless devices that will participate in your wireless network and determine their capablities for encryption. This is generally done searching manufacturer websites under support looking for user guides and firmware updates. Sometimes a devices capabilities in the manual require firmware updates to be true for the device. Once that is figured out the standards for your network can be set and the actual implementation can proceed. You will probably want a working wired computer to maintain access to the outside world for assistance if anything goes wrong. You also want to track your changes and know how to back things out incase things become too difficult.

If you have any additional questions or would like to a review of your plan or assistance determining a plan gather up the appropriate manufacturer's names and models and I will assist as time permits.

I hope this helps.
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