PPPoE (Point-to-Point Protocol over Ethernet) is a protocol for connecting multiple computers and allow data communication over the Ethernet local area network. Mac OS has support for this protocol. To enable it, Go to the System Preferences and click Network. Click the Add button and then click the Interface pop-up menu. Then choose PPPoE. Then choose the interface from the Ethernet pop-up menu between the wired network or Wi-Fi and click create. Enter information such as the account name, password, and PPPoE service name from your ISP. Finally, click Ok to complete the configuration of the PPPoE connection.