Find External Dynamic Lists That Failed Authentication

When an external dynamic list that requires SSL fails client or server authentication, the firewall generates a system log of critical severity. The log is critical because the firewall ceases to enforce policy based on the external dynamic list after it fails authentication. Use the following process to view critical system log messages notifying you of authentication failure related to external dynamic lists.
  1. Select MonitorLogsSystem.
  2. Construct the following filters to view all messages related to authentication failure, and apply the filters. For more information, review the complete workflow to Filter Logs.
    • Server authentication failure—(eventid eq tls-edl-auth-failure)
    • Client authentication failure—(eventid eq edl-cli-auth-failure)
    edl-system-logs.png
  3. Review the system log messages. The message description includes the name of the external dynamic list, the source URL for the list, and the reason for the authentication failure.
    The server that hosts the external dynamic list fails authentication if the certificate is expired. If you have configured the certificate profile to check certificate revocation status via Certificate Revocation List (CRL) or Online Certificate Status Protocol (OCSP), the server may also fail authentication if:
    • The certificate is revoked.
    • The revocation status of the certificate is unknown.
    • The connection times out as the firewall is attempting to connect to the CRL/OCSP service.
    For more information on certificate profile settings, refer to the steps to Configure a Certificate Profile.
    Verify that you added the root CA and intermediate CA of the server to the certificate profile configured with the external dynamic list. Otherwise, the firewall will not authenticate the list properly.
    Client authentication fails if you have entered the incorrect username and password combination for the external dynamic list.
  4. (Optional) Disable Authentication for an External Dynamic List that failed authentication as a stop-gap measure until the list owner renews the certificate(s) of the server that hosts the list.

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