# PPP

- [PPP 101](/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-101.md)
- [PPP Authentication - PAP](/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-authentication-pap.md)
- [PPP Authentication – CHAP](/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-authentication-chap.md)
- [PPP Authentication – EAP](/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-authentication-eap.md)
- [PPP Multilink](/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-multilink.md)
- [PPPoFR – PPP over Frame Relay](/layer-2-technologies/layer-2-wan-protocols/ppp/pppofr-ppp-over-frame-relay.md)
- [PPPoE – PPP over Ethernet](/layer-2-technologies/layer-2-wan-protocols/ppp/pppoe-ppp-over-ethernet.md)