> Source: [sk103862](https://support.checkpoint.com/results/sk/sk103862)

# sk103862 - Mobile Access authentication with Dynamic ID is not working

| Property | Value |
|----------|-------|
| Solution ID | sk103862 |
| Date Created | 2015-01-08 |
| Last Modified | 2016-02-10 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Dynamic ID is not working - OTP (One Time Password) window pop-up is not presented.
* Traffic towards the SMS (Short Message Service) server leaves the Security Gateway, but times out.
* The feature might have worked in the past and stopped even though no changes were made.

## Cause

Due to POODLE Bite vulnerability most SMS/OTP servers changed their encryption version to TLS1.0 and above.

Mobile Access Dynamic ID default SSL version is SSLv3 which has been found vulnerable.

**When an OTP request is sent to an SMS server it is sent using SSLv3 and thus fails.**

## 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