> Source: [sk92657](https://support.checkpoint.com/results/sk/sk92657)

# sk92657 - Legitimate HTTP traffic is rejected by IPS protection 'Non Compliant HTTP' as 'Attack: Block HTTP Non Compliant'

| Property | Value |
|----------|-------|
| Solution ID | sk92657 |
| Date Created | 2013-04-09 |
| Last Modified | 2016-01-28 |
| Technical Level | Advanced |

## Symptoms

- * Legitimate HTTP traffic is rejected by IPS without any message on the web browser.  

* SmartView Tracker log shows:  

  `Protocol: tcp`  
  `Attack: Block HTTP Non Compliant`  
  `Product: IPS Software Blade`  
  `Protection ID: BlockHttpNonProtocolCompliant`  
  `Protection Name: Non Compliant HTTP`  

* Kernel debug (`fw ctl debug -m WS all`) shows:  

  `;ws_body_stream_resume: [ERROR]: the filter offset (54) is larger than the stream's length (41);`  
  `;ws_abs_stream_default_set_reading_context: [ERROR]: couldn't resume the stream;`  
  `;ws_skip_stream_set_reading_context: [ERROR]: ws_abs_stream_set_reading_context failed;`  
  `;ws_gzip_stream_set_reading_context: [ERROR]: ws_abs_stream_set_reading_context for original zipped stream failed;`  
  `;ws_filter_mgr_execute_filter_chain: [ERROR]: set filter context to: CI filter AV, failed;`  
  `;ws_http_process_body: [ERROR]: failed to execute filter chain;`  
  `;ws_http_session_server_read: [ERROR]: failed to process body;`  
  `;ws_policy_get_policy_element: [ERROR]: invalid params;`  
  `;ws_cpas_read_handler: [ERROR]: ws_policy_container_get_action() failed;`

## Solution

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

---

# Agent Instructions

This content is from the Check Point Support Center (https://support.checkpoint.com), the official knowledge base for Check Point cybersecurity products.

## Navigating This Knowledge Base

- **Complete index**: [llms.txt](https://support.checkpoint.com/llms.txt)
- **All SK articles**: [SecureKnowledge Sitemap](https://support.checkpoint.com/sitemaps/secureknowledge-sitemap-index.xml)
- **SK article URL pattern**: `https://support.checkpoint.com/results/sk/{skId}`
- **Markdown responses**: AI bot User-Agents automatically receive `text/markdown` content