Corporate network infrastructure layer

The majority of communication between computers on a corporate (business) layer is accomplished using viewers, proxies, or interfaces such as an internet browser. These engines use HTTP or HTTPS (secure http) protocols to transmit and receive data. This data can be secured, filtered, and carefully monitored. For the most part, only traffic with proper credentials or limited functionality is allowed to pass.

RPC traffic, or Remote Procedure Calling (required with DCOM) is rare between business nodes. Closing DCOM ports for added security at this level can be effective, since the most desktop applications do not use many, if any, DCOM objects, and therefore do not require ports to transport information.

Corporate Network firewall ports

The following table lists the default firewall ports necessary for successful communication between business nodes. HTTP and HTTP ports can be changed through the System Platform Configurator.