> Source: [sk177028](https://support.checkpoint.com/results/sk/sk177028)

# sk177028 - Mounting an ISO via LOM fails with the message "CD Port:5124 is not listening. Closing the CD redirection"

| Property | Value |
|----------|-------|
| Solution ID | sk177028 |
| Date Created | 2021-12-22 |
| Last Modified | 2021-12-25 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server |
| Versions | R82.10, R82, R81.20, R82.10, R82, R81.20, R82.x, R82.20 |
| OS | Gaia |

## Symptoms

- Attempt to mount an ISO over LOM fails with the message:

"*CD Port:X is not listening. Closing the CD redirection"*

## Cause

A networking device is blocking the required ports for LOM operations.

## Solution

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

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