> Source: [sk171060](https://support.checkpoint.com/results/sk/sk171060)

# sk171060 - Cannot change the password for Remote Access VPN if the AD user expires, LDAP authentication failure when port TCP 636 is required

| Property | Value |
|----------|-------|
| Solution ID | sk171060 |
| Date Created | 2020-12-20 |
| Last Modified | 2022-07-13 |
| Technical Level | General |
| Products | Spark Firewall (Locally Managed) |
| Versions | R81.10.X |
| Platform | 1500, 1600, 1800, 910 |

## Symptoms

- * The user cannot change the password for RAVPN if the AD user expires.
* Authentication failure with LDAP when port TCP 636 is required. <br />

## Solution

This is an expected behavior: Gaia Embedded devices do not support LDAP over SSL.

<br />

---

# 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