Wide area networks (WANs) are supported indirectly by the operating system support provided at the network interface level. The primary considerations when having a distributed system operating in a wide area domain are:
1. There will be reduced throughput and increased latency; and
2. Security measures (e.g. firewalls), are in common use. Network administrators must open up the port required by RPC Manager for this to function. The port required is set in RPC Manager configuration, (see RPC Manager Configuration for details).