# Blocked HTTP HEAD requests from Android devices

## Product
Security Gateways

## Version
R81.10 (EOS), R81.20, R82

## OS
Gaia

## Last Modified
2025-06-23

## Symptoms
- Android devices generate HTTP HEAD requests to Google services through the Security Gateway proxy. The proxy blocks these requests, creating a high volume of logs (more than 37,000 in 24 hours). This excessive logging causes increased CPU usage and impacts Security Gateway performance, though Android device functionality remains unaffected.

## Cause
Android devices sending HTTP/1.1 requests without required Host header violates RFC 7230. Security Gateway proxy blocks these non-compliant requests per protocol standards and security requirements as malformed.

## Solution
This problem was fixed. The fix is included in:
- [Jumbo Hotfix Accumulator for R82](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82/Default.htm) starting from Take 14
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 99
- [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 177

If you choose not to upgrade, Check Point can supply a **Hotfix**. [Contact Check Point Support](https://www.checkpoint.com/support-services/.contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.

For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**
Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

#### NOTE
This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

## Article Properties

- **Access Level**: General
- **Status**: Approved by TAC
- **Date Created**: 2025-01-06
- **Last Modified**: 2025-06-23