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Now that you've created a DB Instance, you need to authorize access to the DB Instance.
In this example, you authorize the default DB Security Group. You use CIDR (Classless Inter-Domain Routing) notation to specify either a single IP address or a range of IP addresses that you will allow to connect to your DB Instance.
![]() | Caution |
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To avoid inadvertently granting access to your DB Instances, be sure to understand how CIDR ranges work. For more information about CIDR ranges, go to the detailed description in Wikipedia. |
To grant access to an IP range for a DB Security Group
Select DB Security Groups from the navigation pane on the left side of the console window.

In the My DB Security Groups list, select the check box next to the DB Security Group named default.

On the Description tab at the bottom of the window, select CIDR/IP from the Connection Type drop-down list, type your CIDR range into the CIDR text box, and click the Add button.
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The IP address used in the example below is for illustration purposes only; be sure to substitute your own CIDR range. The CIDR range for your current IP address appears on the page just below the CIDR text box. |

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It takes approximately one minute for changes to access permissions to take effect. |
Now that you've authorized access to your DB Instance, you can connect to it. Click the following button.
