> Source: [sk152832](https://support.checkpoint.com/results/sk/sk152832)

# sk152832 - VPN traffic being dropped for "decryption failed" when SecureXL enabled	

| Property | Value |
|----------|-------|
| Solution ID | sk152832 |
| Date Created | 2019-05-01 |
| Last Modified | 2020-10-26 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- If the VPN tunnel is configured with GCM ciphers (AES-GCM-128, AES-GCM-256) for Phase 2, encrypted traffic is dropped when SecureXL is enabled.

## Cause

SecureXL code does not handle decryption computation of GCM.

## 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
