---
title: "Deactivate SLAAC - IT Security"
slug: "it-security-hardening-deactivate-slaac-en"
updated: 2024-07-19T06:54:14Z
published: 2024-07-19T06:54:14Z
canonical: "docs.insys-icom.com/it-security-hardening-deactivate-slaac-en"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.insys-icom.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Deactivate SLAAC - IT Security

With SLAAC (StateLess Address AutoConfiguration), the router will configure itself an IPv6 address with the broadcasted prefix in addition to its already configured addresses if there is a router in the respective local network that broadcasts IPv6 address prefixes using router advertisement. If this is not required since no IPv6 or no Router Advertisement is used in a local IPv6 network, it is recommended to deactivate SLAAC for this local network

1. Click in the ![lan](https://docs.insys-icom.de/assets/icons/lan.png) *Network* → *Interfaces* menu in the *IP networks* section in the line of the network **net1** on ![pencil](https://docs.insys-icom.de/assets/icons/pencil.png), then on ![menu right](https://docs.insys-icom.de/assets/icons/menu-right.png) *to extended view* and uncheck the checkbox *Start SLAAC*.
2. Click on **SUBMIT** .
3. Repeat the deactivation of SLAAC for each further local network (IP net 2-5), if this is active (checkbox *Active* is checked) and no IPv6 or no Router Advertisement is used in this local IPv6 network.
4. Click on **ACTIVATE PROFILE** **![cog white](https://docs.insys-icom.de/assets/icons/cog_white.png)** .