# Engine Editor > General > Tester

Use this branch to configure the tester to run various checks on the Security Engines and initiate responses based on the success or failure of these tests.

Note: These settings are not supported for Virtual Engines.

Option | Definition
--- | ---
Global Settings section
Alert Interval | Specify the time in minutes the Security Engine waits before sending a new alert when the same test keeps failing repeatedly. The default value is 60 minutes. If the interval is too short, the alerts can overload the system or the alert recipient.
Delay After | Specify the time in seconds that the Security Engine waits before it resumes running the tests after the listed events. The delay prevents false test failures that can occur due to variations in how quickly different processes and subsystems can start and stop. The maximum value is 1800. Boot — The default is 30 seconds. Reconfiguration — The default is 5 seconds. Status Change — The default is 5 seconds.
Auto Recovery (Clusters and Master Engines only) | When selected, the Security Engine automatically goes back online when a previously failed test completes successfully. Run the test in both online and offline states if you activate this option.
Boot Recovery | When selected, the Security Engine automatically goes back online after restarting if all offline tests report a success.
Global Node Selection for Engine Tests
Filter | Allows you to filter the elements shown.
More actions | A menu that contains various options, such as for creating new elements or showing elements that have been moved to the Trash.
Active | Shows whether the node is included in the tests that have been configured for the engine. Deselect to exclude a node from all Security Engine tests. Tip: If you select ALL for the Node setting in the test properties, you can use the Global Node Selection for Engine Tests table to exclude a specific node from the test.
Name | Specifies the name of the node.
Node | Specifies the node ID.
Set to Default | Returns tester changes to the default settings.

Option | Definition
--- | ---
Engine Tests section
Filter | Allows you to filter the elements shown.
More actions | A menu that contains various options, such as for creating new elements or showing elements that have been moved to the Trash.
Name | The name of the test. If you want to run more than one instance of the same test type with different parameters, give each test a unique name.
Active | Shows whether the test is active. Deselect to deactivate a test.
Node | Specifies whether the test applies to all nodes or a selected node.
Interval | Specifies how often the test is run. The minimum interval is one second and the maximum is 86400 (one day). Note: We recommend a minimum interval of four seconds. Running a test too frequently can increase overhead.
States | Shows the Security Engine states on which the test is run.
Action | Specifies which action is taken if the test fails, and which type of notification is sent.
Parameters | Shows some test details.
Add | Adds a test to the table: External — Runs a custom script stored on the Security Engine. If the script returns the code zero (0), the test is considered successful, otherwise the test is considered failed. File System Space — Checks the free disk space on a hard disk partition. Free Swap Space — Checks the available swap space on the hard disk. Inline Pair Link Speed — Checks whether the network settings (speed/duplex) match on the two ports that form the inline pair and can force ports to use the same settings. Not available in the Engine/VPN role. Link Status — Checks whether a network port reports the link as up or down. Multiping — Sends out a series of ping requests to determine whether there is connectivity through a network link. Policy — This option is included for backward compatibility with legacy software versions.
Edit | Allows you to change the test properties.
Remove | Removes the test from the table.