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Cannot Connect to the Wireless Network When Using 802.1x (WPA-EAP) for Authentication

03/26/2020 16 People found this article helpful 97,693 Views

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    Description

    When using WPA-EAP, WPA-EAP2 or WPA-AUTO-EAP for authentication, SonicWall Wireless or SonicPoint is required to set Radius Server for Wifi client authentication. During the configuration process, you may encounter some issues. This article aims to show you how to do the troubleshooting when you cannot connect to the wireless network by 802.1x.

    Image

    NOTE: In this scenario,  192.168.136.168 as Radius Client has been added on the Radius server 192.168.136.66.

     

    Resolution

    1. Check Radius Server Settings

    Normally, Radius Server is configured in Wireless or SonicPoint page.

     

    ImageHow to configure Radius Server on SonicPoint.:

    Click SonicPoint | SonicPoints | Click Edit button at SonicPointNs area | Click Radio Basic |  Select WPA-EAP, WPA2-EAP or WPA-AUTO-EAP | Click Configure button at Radius Server Settings area.




    Image

    However, when doing troubleshooting, navigate to Users | Settings page. You can use Radius testing tool here.

    1) Click Configure Radius button | Click tab Settings | Input the IP Address, Shared Secret and Port Number of your Radius Server

    Image

    2) Click tab Test | Input User name , Password and Authentication type | Click Test button.

    Issue A: Server Response Server Timeout.
    Resolution A:  On SonicWall, please double check the IP Address, Port Number of your Radius Server.
     On Radius Server (Windows 2008 NPS), please check the Radius Client settings is correct and also ensure the
    Radius Server is available.

    Image

     Image

    Issue B: Server Response RADIUS communication error.
    Resolution B: Please check Shared Secret setting.

    Image

     Image

    Issue C: Server Response Radius Client Authentication Failed.
    Resolution C: Your User name, Password is not correct, or authentication methods is not enabled in the Network Policy on your Radius Server.

    Image

    2. Check NAT Policy or Access Rule configuration on the SonicWall

    When the testing is OK from DMZ interface 192.168.236.168 to the Radius server but you still cannot connect to the wireless network, please check whether there is any necessary NAT policy or Access Rule you need add.

    Image

    1 ) On the Radius Server, if you add DMZ 192.168.136.168 as Radius Client and you access Radius server through WLAN interface 10.10.10.1. Go to Network | NAT Policies, you are required to add an NAT Policy on the firewall as following.

    Image

    If there is no NAT policy, you may receive error on the NPS server as below picture. When capture the Radius packet , the Source IP is 10.10.10.1.

    Image

    Image

    2) On the Radius Server, if you add WLAN ip 10.10.10.1 as Radius Client. You are required to add an Access Rule on the firewall as the Radius Server of LAN zone is inaccessible from wireless zone by default. Go to Firewall | Access Rules, add an Access Rule as following.

    Image
    Image

    3. Check Wifi client Settings
    On Radius Server, please check ther EAP Type. If just using password for authentication , please uncheck the option Validate server certificate on your WIFI client.

    Image

    Image
    How to test:

    When everything above configured correctly, you can connect your WIFI client to the network successfully by 802.1x protocol.

    Image

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    Categories

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