Various versions of standard PPP are available and in wide use throughout the Internet community. ANU PPP-2.4 is a popular choice for Linux and all three major BSD variants (FreeBSD, OpenBSD, and NetBSD), and Tru64 UNIX.
Solaris PPP 4.0 brings the highly configurable features of ANU PPP-2.4 to machines that run the Solaris operating environment. Machines that run Solaris PPP 4.0 can easily set up PPP links, not only to machines that run ANU PPP-2.4, but to any machine that runs an implementation of standard PPP.
Some non-ANU-based PPP implementations that successfully interoperate with Solaris PPP 4.0 include the following:
Solaris PPP, also known as asppp, available with the Solaris 2.4 through Solaris 8 operating environments
SolsticeTM PPP 3.0.1
Windows 98 DUN
Cisco IOS 12.0 (synchronous)