Troubleshooting Scanner Connection Issues

Last updated: January 21, 2026

Experiencing scanner connection issues can be frustrating. This guide helps you quickly identify and resolve common problems so your scanner operates smoothly and efficiently.

Steps to Troubleshoot

  1. Check Website Access

  • Ensure the web asset does not have restrictions that block automated scanning.

How to scan applications with restricted access

  • Verify that your configurations comply with the recommended access setup.

  1. Verify Resource Allocation

    • Make sure the web asset has enough resources to handle the automated scan without overloading.

  2. Validate Scope URLs

    • Confirm that the configured URLs do not return errors like 404, 403, 500, 502, or 503.

  3. Handle Cloudflare Protection

    • If the web asset is protected by Cloudflare, allowlist Astra IP ranges.

    • This ensures that security features like Super Bot Fight Mode do not block scanner requests.

  4. Check Default Pages

    • Ensure the web asset is not showing default server pages (e.g., Nginx or Apache default pages), as these can interfere with scanning.

  5. Verify Scanner Connection

    • To check if the scanner can successfully connect, you can:

      • Run a test scan on the web asset.

      • Use the “Test Connectivity” feature available in the Scope section on the dashboard settings page.

        Screenshot 2026-01-21 084753.png

    • Both methods help confirm whether the scanner can reach the web asset successfully.