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PDEL_PPP(3)		 BSD Library Functions Manual		   PDEL_PPP(3)

NAME
     pdel_ppp -- PPP library for VPNs that uses	netgraph(3)

LIBRARY
     PDEL Library (libpdel, -lpdel)

SYNOPSIS
     #include <sys/types.h>
     #include <pdel/ppp/*.h>

DESCRIPTION
     The libpdel(3) library includes a PPP stack with support for:

     -	 The IP	network	layer (IPCP)

     -	 Authentication	via PAP, CHAP-MD5, MS-CHAPv1, MS-CHAPv2, and RADIUS

     -	 The PPTP transport layer with PPTP server support

     -	 The L2TP transport layer with L2TP server support

     -	 Microsoft MPPE	encryption

     This library works	in conjunction with the	various	netgraph(4) nodes that
     come with the FreeBSD kernel and is a PPP library,	not a PPP server.
     That is, it handles all the PPP state machinery, while deferring all
     "policy" decisions	to the application code	via callbacks.	For example,
     the application is	ultimately responsible for acquiring and verifying
     user credentials, determining what	IP addresses may be negotiated,	etc.

     The library constructs netgraph node graphs that have a "loose end" net-
     graph hook	which transmits	and receives IP	packets; the application is
     responsible for connecting	this hook to something useful (e.g., an
     ng_iface(3) node),	configuring the	interface, etc.	 The library makes
     available to the application all the information that it needs in order
     to	properly do such configuration (such as	the negotiated IP addresses).

     At	this time, there is no documentation other than	this man page and the
     comments in the code.  There is a fully functioning sample	PPTP/L2TP test
     server in the test	subdirectory that is statically	configured and allows
     a single connection at a time.  It	demonstrates how to create a server
     and the application callbacks.  The application callbacks are documented
     in	the corresponding header files.

     Because PPTP and L2TP are the only	supported transport types, this	li-
     brary is most useful for implementing VPN software.

SEE ALSO
     libpdel(3),

HISTORY
     The PDEL library was developed at Packet Design, LLC.
     http://www.packetdesign.com/

AUTHORS
     Archie Cobbs <archie@freebsd.org>

BSD				 June 2, 2004				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS

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