---
title: "Set a security group as default"
description: "Make a security group the default one for your project and region, so new nodes use its rules automatically."
content_type: "how-to"
product: "security-group"
platform: "MyAccount"
url: "/myaccount/security-group/how-to/set-a-security-group-as-default/"
topic: ["manage"]
relationships: {"requires":["/myaccount/security-group/how-to/create-a-security-group/"]}
---

# Set a security group as default

The default security group is the one a new node in its project and region starts with,
unless you pick another group while creating the node. Each project and region has one default at a time,
so making a group default takes the role away from the previous one.

## Before you begin

- The security group you want as the default. See
  [Create a security group](/myaccount/security-group/how-to/create-a-security-group/).

## Make the group the default

1. Open **Network > Security Group**.
2. Open the group's **Actions** menu and choose **Make Group Default**.

The **Default** column now marks this group, and the previous default in the same project and
region is an ordinary group again. Nodes that are already running keep the groups they have.

To make a group the default as you create it, turn **Make this group default** on in the create
form.

Every new node in this project and region now starts with this group. A group can be deleted only
when it is not the default, so this is also the first step to removing an old default; see [Delete a
security group](/myaccount/security-group/how-to/delete-a-security-group/).