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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 defer- ring 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 nego- tiated, etc. The library constructs netgraph node graphs that have a "loose end" netgraph 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 ad- dresses). 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 con- figured 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> FreeBSD ports 15.0 June 2, 2004 PDEL_PPP(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS
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