Only addresses you list can open a connection. Keep the list limited to servers and networks you trust.
QubicDB only accepts database connections from IP addresses on your allowlist. Username and password alone are not enough.
Use the public IP that your traffic leaves the internet from. If the app runs behind a cloud load balancer, NAT gateway, or VPN, allowlist that outbound public address, not a private LAN address.
Deactivating or deleting an entry stops new connections from that address. Update your app config or restart the app if it still holds an old open connection.