Troubleshoot Cisco Meraki integrations

This type of error occurs in the following situations:

• The CA certificate wasn't added on the client machine
• The wrong CA certificate was added on the client machine
• An incorrect Wi-Fi network is used

Description

Configuration appears correct when compared with Configure Cisco Meraki. However, a WiFi or VPN connection doesn't get established.

Symptoms

• The following log statement is visible in the RADIUS agent logs at the DEBUG level: DEBUG - ...finished handshake - will transfer app data
• One of the following error codes are present in the supplicant logs: 0x80090349 (-2146892983 SEC_E_CERT_WRONG_USAGE) 0x80420101 (-2143158015 EAP_E_USER_CERT_INVALID)
• One or more of the following error messages are present in the supplicant logs: The user {user} dialed a connection named {connection-name} which has failed. The error code returned on failure is -2146892983 Reason: Explicit Eap failure received Error: 0x80420101 EAP Reason: 0x80090349 EAP Root cause String: EAP Error: 0x80420101.

Solution

Replace the current certificate with a new updated certificate.

Examine and updated the Extended Key Usage(EKU) attributes as required.

To set the log level in the RADIUS agent:

1. Using a text editor, open the log4j.properties file from the installation folder C:\Program Files (x86)\Okta\Okta RADIUS Agent\current\user\config\radius\
2. Change the last instance of info to debug (verbose) or trace (very verbose).

   The update should resemble these example:

   log4j.rootLogger=debug, app, stdout

   This is another example:

   log4j.rootLogger=trace, app, stdout
3. Save the change and close the editor.

To examine logs or capture packets:

• On Mac, to display log information during connection attempts:

  Open a command prompt and execute the command:

  log show --predicate 'subsystem == "com.apple.eapol"'

  Attempt to connect to the WiFi access point.

  Examine the log, which will product results similar to:

  2019-04-10 15:38:53.868667-0400 0x1caacd Default 0x0 17296 0 eapolclient: [com.apple.eapol:Client] en0 START uid 501 gid 20 2019-04-10 15:38:54.062713-0400 0x1caacd Default 0x0 17296 0 eapolclient: [com.apple.eapol:Client] en0: 802.1X User Mode 2019-04-10 15:39:02.510875-0400 0x1caacd Default 0x0 17296 0 eapolclient: [com.apple.eapol:Client] en0 EAP-TTLS: successfully authenticated 2019-04-10 15:39:11.117972-0400 0x1caacd Default 0x0 17296 0 eapolclient: [com.apple.eapol:Client] en0 STOP
• On Meraki cloud admin dashboard, navigate to Network-wide, and select either Packet capture or Event Log, as shown below.

  

At a high level, there are three stages in the communication between the supplicant/AP and the RADIUS server when an authentication takes place:

• exchange of EAP-Identity and EAP-Start messages
• TLS Handshake, starting with a ClientHello
• RADIUS Access-Accept, followed by a 4-way EAPoL handshake between the AP and supplicant