Sigma rule: Host Without Firewall

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-f7ae91a3cdf6, updated 2025-11-01T00:00:00.000Z.

Rule

Title
Host Without Firewall
Status
experimental
Level
low
Author
Alexandr Yampolskyi, SOC Prime
Date
2019-03-19
Modified
2025-11-01
File
rules-compliance/product/qualys/qualys_host_without_firewall.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Host Without Firewall. Alert means not complied. Sigma for Qualys vulnerability scanner. Scan type - Vulnerability Management.

Log source

product
qualys

Detection

selection:
    event.category: 'Security Policy'
    host.scan.vuln_name|contains: 'Firewall Product Not Detected'
condition: selection

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-compliance/product/qualys/qualys_host_without_firewall.yml

Sources and licences

  • SigmaHQ

    "Host Without Firewall" by Alexandr Yampolskyi, SOC Prime (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-compliance/product/qualys/qualys_host_without_firewall.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Host Without Firewall",
entity page, dataset version ref-f7ae91a3cdf6, updated 2025-11-01T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/6b2066c8-3dc7-4db7-9db0-6cc1d7b0dde9 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 6b2066c8-3dc7-4db7-9db0-6cc1d7b0dde9, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.