Connect your Mac to the internet using PPPoE
If you use a DSL or cable modem to connect to the internet, and your ISP uses Point-to-Point Protocol over Ethernet (PPPoE), you need to create a new network service, and enter your account name and other information you received from your ISP.
On your Mac, choose Apple menu > System Settings, then click Network in the sidebar. (You may need to scroll down.)
Click the Action pop-up menu on the right, then choose Add Service.
Click the Interface pop-up menu, then choose PPPoE.
Click the Ethernet pop-up menu, then choose an interface for the PPPoE service (choose Ethernet if you’re connecting to a wired network or Wi-Fi if you’re connecting to a wireless network).
Enter a name for the PPPoE service in the Service Name field, then click Create.
In the network service list, select the new PPPoE service you just created, then click the Advanced button.
Enter the information you received from your ISP in the PPPoE Service Name, Account Name, and Password fields.
If you need to enter IPv4, IPv6, or router settings, click TCP/IP in the sidebar, then enter the information you received.
If you need to enter DNS server or search domain settings, click DNS in the sidebar, then enter the information you received.
If you need to enter WINS settings, click WINS in the sidebar, then enter the information you received.
If you need to enter proxy server settings, click Proxy in the sidebar, then enter the information you received.
Click PPP in the sidebar, then adjust any of the settings as needed.
Click OK.