# Setting up a channel security group
<a name="channel-security-groups-setup"></a>

To use a channel security group, you must first have an input security group with the appropriate CIDR allow list rules. Then you can attach that input security group to your channel as a channel security group.

**Note**  
The information in this section assumes that you are familiar with the general steps for [creating a channel](creating-channel-scratch.md) and with [working with input security groups](working-with-input-security-groups.md).