Allow diiop connection from specific IPs

i have an environment where no of applications residing on different server(websphere) connect to same lotus notes server.i want to put a control on domino side to be able to decide which application it should allow connection and reject connetion to others.

what is the way to achieve that apart from firewall etc?

is there any setting on domino that allows that.

that is to allow connection only to specific ips.

thanks