If the target resource is behind a firewall, you will need to whitelist Load Injector (LI) IP addresses to access your site. 

The LI IP address can be determined only when all LIs are started. Therefore, you need to start the test first and on the Stress Test Report page, click Download agent list as soon as the LIs from all zones are started. 

 

To whitelist IPs, simply copy the downloaded list to the firewall rules. To account for the time required to whitelist IPs, configure the test to have just one user running for some time before the main load will hit the target.

 The LI IP addresses list is unique for each test run, so you need to whitelist new IPs every time you run a new test.

This workaround can only be applied for Load Step Curve and Dynamic Curve Stress Tests. 

To set up the portion of the scenario running just one user, follow the guidelines below.

Load Step Curve

  1. For the first step, set the Start With value to 1.
  2. Add the Hold For step and set the time offset duration to 10 minutes.
  3. Continue configuring the test according to your needs.
  4. Start the test and on the Stress Test Report page wait until all LIs are started successfully.
  5. Click Download agent list.
  6. Configure your firewall.

Dynamic Adjustable Curve         

  1. Set the Start Users value to 1.
  2. Add 10 minutes to Max.Duration to cover the time offset for firewall configuration.
  3. Continue configuring the test according to your needs.
  4. Start the test and on the Stress Test Report page wait until all LIs are started successfully.
  5. Click Download agent list
  6. Configure your firewall and then start adjusting the load level on the Stress Test Report page.