> Source: [sk184304](https://support.checkpoint.com/results/sk/sk184304)

# sk184304 - Unexpected URL Categorization or Blocking by Security Gateway

| Property | Value |
|----------|-------|
| Solution ID | sk184304 |
| Date Created | 2025-11-09 |
| Last Modified | 2025-11-20 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.20 |
| OS | Gaia |

## Symptoms

- * The Security Gateway blocks access to a specific domain or application.

* The application fails to load content (such as images, API calls, or files).

* Logs indicate that Web Control or the URL Filtering Blade block the connection with a category such as "High Risk," "Spyware / Malicious Sites," or similar.

* The same domain is accessible when bypassing the Security Gateway.

## Cause

In some scenarios, a domain might be accepted if its subdomain was categorized by the Security Gateway's local URL Filtering engine as "High Risk" or "Malicious." This can cause policy-based blocking.

Common causes include:

* Local rule base configuration or category overlap rather than a global ThreatCloud classification.

* Cached or outdated URL Categorization data.

* A subdomain being categorized differently from the parent domain.

## Solution

This solution requires authentication. Please log in to view the full solution.

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