The specific ports needed to open on a firewall vary somewhat depending on what services are placed into the DMZ and which services need to be accessible from the Internet. This section summarizes commonly deployed DMZ roles and the ports necessary to support them. The description calls out the port, traffic type, type of firewall it applies to (internal or external), and purpose for the opening. Table 12.1 describes, in detail, the port requirements for Lync Server 2013.
“Inbound” and “Outbound” refer to the direction between the Internet or internal network and the specified Access Edge Service. For example, if the service is A/V Edge, and it says “Inbound,” you must open the port with the destination address of the A/V Edge Service IP Address.