> Source: [sk117612](https://support.checkpoint.com/results/sk/sk117612)

# sk117612 - Source Hide NAT is performed even though a no-NAT rule is configured

| Property | Value |
|----------|-------|
| Solution ID | sk117612 |
| Date Created | 2017-05-26 |
| Last Modified | 2020-07-20 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server, SmartConsole |
| Versions | R82.10, R82, R81.20, R82.10, R82, R81.20, R82.10, R82.x, R82.20, R82.x, R82.20, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Traffic captures (fw monitor) show that the source IP address is translated to one of the Physical IPs of the Security Gateway even if there is a no-NAT rule configured.
* Traffic arrives to next-hop with the NATed IP address.
* Changing the NAT method of the "Original Packet" rule to "Static-NAT" instead of "Hide-NAT" resolves the issue.

## Cause

By design, the Security Gateway default value of **no-NAT** rule should be **Static-NAT**.

However, in R80 and R80.10 Security Management Server, users can change the NAT method of "Original packet" to hide-NAT, which can cause the Security Gateway to perform NAT on the Source-IP configured in this particular rule even if there is a no-NAT rule configured.

[![](https://sc1.checkpoint.com/sc/SolutionsStatics/sk117612/Translated-source1705290633.png)](https://sc1.checkpoint.com/sc/SolutionsStatics/sk117612/Translated-source1705290633.png "Click the image to see it in full size in a new tab/window")

## Solution

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

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