> Source: [sk167592](https://support.checkpoint.com/results/sk/sk167592)

# sk167592 - "ZTin" interface appears after clean install/reversion to factory defaults

| Property | Value |
|----------|-------|
| Solution ID | sk167592 |
| Date Created | 2020-07-04 |
| Last Modified | 2021-11-03 |
| Technical Level | Advanced |
| OS | Gaia |
| Platform | 6000 |

## Symptoms

- After clean install/reversion to factory defaults, an additional network interface named "ZTin" appears on the device.

* The interface appears only on clish "*show interfaces*."
* The interface does not appear in *ifconfig*.
* The interface disappears after First Time Wizard procedure.

<br />

## Cause

When a machine is freshly installed (ISOMorhpic / Factory default), a process called ZeroTouch allows you to pull configurations from the ZeroTouch portal and configure the machine.  

The ZeroTouch process creates a virtual interface for its own use called "ZTin," This is an expected behavior.   

When the ZeroTouch process finishes (either by pulling configurations from the portal / or when the user runs the First Time Wizard), the virtual interface is removed.

<br />

## Solution

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

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