Carlson, James. PPP Design, Implementation, and Debugging. 2nd ed. Addison-Wesley, 2000.
Sun, Andrew. Using and Managing PPP. O'Reilly & Associates, 1999.
Go to the following web sites for general information about PPP:
For a list of frequently asked questions (FAQ) and other information about pppd, go to the following site that is provided by the Internet Engineering group at Sun Microsystems, http://playground.sun.com/pppd.
For ANU PPP information, go to the PPP repository of Australian National University, http://.pserver.samba.org/cgi-bin/cvsweb/ppp/.
For technical information, FAQs, discussions about Solaris system administration, and earlier versions of PPP, go to Sun Microsystem's system administrators' resource, http://www.sun.com/bigadmin/home/index.html.
For modem configuration and advice on many different implementations of PPP, refer to Stokely Consulting's Web Project Management & Software Development web site at http://www.stokely.com/unix.serial.port.resource/ppp.slip.htm.
1661 and 1662, which describe the major features of the PPP protocol
1334, which describes authentication protocols, such as Password Authentication Protocol (PAP) and Challenge-Handshake Authentication Protocol (CHAP)
2516, an informational RFC that describes PPP over Ethernet (PPPoE)
To obtain copies of PPP RFCs, specify the number of the RFC on the IETF RFC web page at http://www.ietf.org/rfc.html .