PDEL_PPP(3) 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 applica- tion is ultimately responsible for acquiring and verifying user creden- tials, 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 re- sponsible 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 library 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> FreeBSD ports 15.quarterly June 2, 2004 PDEL_PPP(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS
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