If your clusters are exposed to the Internet, they allow any authenticated client to connect to them by default. To grant access only to specific clients, you can add their IP addresses to a whitelist.
To add IP addresses to the whitelist of a team’s cluster, you must have either an admin or developer role.
Sign into the Hazelcast Viridian console and select your cluster.
Click IP Whitelisting.
Make sure that the Enable toggle is On in the top-right corner.
Add the IP addresses of your clients.
Any changes you make will be effective immediately.