Assigning scan limits

  • Last updated: March 8, 2023

  • Read time: 1 Minute

To avoid placing too much load on your scanning machines, you can limit the maximum number of concurrent scans that they can run. For newly added scanning machines, the default scan limit is 1. If the scanning machine has enough RAM and CPU cores, you can increase the scan limit. For more information, refer to the System requirements.


This page explains how to configure fixed scanning machines as part of a standard deployment. For information on how to use cloud-based auto-scaling scanning, see the Managing auto scaling scan resources page.

If you decide to change the scan limits, increase the number slowly and monitor the effect this has on performance.

To assign scan limits, do the following steps:

  1. From the settings menu , select Scanning machines.
  2. To change the Concurrent scan limit, click the plus or minus icons.

Notice that License info shows you the total number of concurrent scans that you can run across all of your machines. It also shows you the remaining number of concurrent scans that you are licensed to run.

Additional scans

You can purchase a license for more concurrent scans at any time from your account page on portswigger.net.

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