Avaya strongly recommends using a firewall product to protect your internal LAN, including any Avaya IR servers, from unauthorized access. Firewalls sit between your LAN and the Internet and control access to designated ports. Most firewalls can be configured to allow specified remote IP addresses to connect to designated ports.
For information about establishing a firewall on your network, see the following resources:
If using a firewall is not an option, you can to configure your Avaya IR system on a physically isolated LAN. For more information see Physically isolating the LAN.