Select your deployment and navigate to the Firewall. The network (or individual IPs) of your VPC must be granted access through the firewall. Otherwise, it will not be possible for your clients or applications to connect and you will see errors such as Connection timeout.
Press Create Trusted Source and fill out the information in the dialog:
Once added, you can see the source IP address range is automatically added for all required CCX endpoints:
The networking configuration is now complete. The next step is to create the database schema and user. See Database Access.