> Source: [sk123421](https://support.checkpoint.com/results/sk/sk123421)

# sk123421 - Security Gateway is Hide NAT-ed behind itself and this setting cannot be disabled

| Property | Value |
|----------|-------|
| Solution ID | sk123421 |
| Date Created | 2018-04-02 |
| Last Modified | 2018-04-03 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server, SmartConsole |
| Versions | R82.10, R82, R81.20, R82.10, R82, R81.20, R82.10, R82.20, R82.20, R82, R81.20 |

## Symptoms

- * Security Gateway is Hide NAT-ed behind itself: *SmartConsole -\> Gateway object -\> NAT -\> Advanced -\> "Add automatic address translation rules to hide this Gateway behind another Gateway" checked -\> Hide behind Gateway selected*


  ![](https://sc1.checkpoint.com/sc/SolutionsStatics/sk123421/for_sk1804011828.png)
* When trying to disable this particular Hide NAT setting, the following error is seen in SmartConsole: `Server error is: Data required for operation (Code:0x8003001D,) Could not access file for write operation`

* The fwm.elg file shows: `ERROR utils.runtime.CpAssert$DefaultAssertionErrorHandler [qtp-1401388164-87]: AssertionError has been caught: Expected to only get matches representing NAT rules, received a com.checkpoint.management.coresvc.ngm_api.SearchMatchInfo`

* Rebooting the Security Management station does not fix the issue.

## Solution

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

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