Panorama Web Interface : Panorama > Managed Collectors : Log Collector Configuration : Log Collector Authentication Settings

Log Collector Authentication Settings
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An M-Series appliance or Panorama virtual appliance in Log Collector mode (Dedicated Log Collector) does not have a web interface; only a CLI. You can use the Panorama management server to configure most settings on a Dedicated Log Collector but some settings require CLI access. To configure authentication settings for CLI access, configure the settings as described in the following table.
CAUTION: 
If you set the Failed Attempts to a value other than 0 but leave the Lockout Time at 0, then the administrator is indefinitely locked out until another administrator manually unlocks the locked-out administrator. If no other administrator has been created, you must reconfigure the Failed Attempts and Lockout Time settings on Panorama and push the configuration change to the Log Collector. To ensure that an administrator is never locked out, use the default (0) value for both Failed Attempts and Lockout Time.
Fastpath: 
Set the number of Failed Attempts to 5 or fewer to accommodate a reasonable number of retries in case of typing errors, while preventing malicious systems from trying brute force methods to log in to the Dedicated Log Collector.
Enter the number of minutes for which the Dedicated Log Collector locks out an administrator from access to the CLI after reaching the Failed Attempts limit (range is 0 to 60; default is 5). A value of 0 means the lockout applies until another administrator manually unlocks the account.
CAUTION: 
If you set the Failed Attempts to a value other than 0 but leave the Lockout Time at 0, then the administrator is indefinitely locked out until another administrator manually unlocks the locked-out administrator. If no other administrator has been created, you must reconfigure the Failed Attempts and Lockout Time settings on Panorama and push the configuration change to the Log Collector. To ensure that an administrator is never locked out, use the default (0) value for both Failed Attempts and Lockout Time.
Fastpath: 
Set the Lockout Time to at least 30 minutes to prevent continuous login attempts from a malicious actor.
Fastpath: 
Set the Idle Timeout to 10 minutes to prevent unauthorized users from accessing the Dedicated Log Collector if an administrator leaves a session open.
Log Collector Configuration