PPPoE stands for Point-to-Point Protocol over Ethernet. It is a network protocol sometimes used by broadband modems for DSL Internet service.

PPPoE allows Internet Service Providers to manage access to accounts via user names and passwords. The username and password is often configured in the DSL modem or router itself and does not require any additional software configuration.

Another distinct characteristic of PPPoE connections is the fact that packets must account for an additional 8-byte PPPoE header, making the maximum packet size 1492, as opposed to 1500.