# Managing channel security groups
<a name="channel-security-groups-manage"></a>

After you have created a channel with a channel security group, you can view, update, or remove the channel security group.

# Viewing channel security group details
<a name="channel-security-groups-view"></a>

**To view the channel security group for a channel**

1. Open the MediaLive console.

1. In the navigation pane, choose **Channels**.

1. Choose the channel name to view its details.

1. In the **Details** tab, find the **Channel security groups** field. This field shows the ID of the input security group being used as the channel security group.

1. To view the CIDR rules in the input security group, choose the input security group ID link. This opens the input security group details page.

# Updating or removing a channel security group
<a name="channel-security-groups-update"></a>

You can change which input security group is used as the channel security group, or you can remove the channel security group entirely. However, you can only make these changes when the channel is stopped.

**To update or remove a channel security group**

1. Stop the channel if it is running.

1. In the navigation pane, choose **Channels**.

1. Select the channel, and then choose **Edit**.

1. Choose **Channel and input details** in the navigation pane.

1. In the **General settings** section, find the **Channel security groups** field.

1. To change the channel security group, select a different input security group from the dropdown list.

   To remove the channel security group, clear the selection. Note that you can only remove the channel security group if you also remove all SRT outputs configured in listener mode from the channel.

1. Choose **Update channel**.

# Updating CIDR rules
<a name="channel-security-groups-update-rules"></a>

To update the CIDR allow list rules for a channel security group, you update the underlying input security group. The changes automatically apply to all channels using that input security group as a channel security group.

**To update CIDR rules for a channel security group**

1. In the navigation pane, choose **Input security groups**.

1. Select the input security group that is being used as a channel security group, and then choose **Edit**.

1. Update the CIDR rules as needed. For instructions, see [Editing an input security group](edit-input-security-group.md).

1. Choose **Update**.

**Result**

MediaLive automatically applies the updated CIDR rules to all channels using this input security group as a channel security group. You don't need to restart the channels. The changes take effect immediately.