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Wed Mar 17 00:39:23 2021 UTC (3 years, 3 months ago) by misho
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mpd 5.9

1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> 2: <HTML> 3: <HEAD> 4: <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> 5: <TITLE>Overview</TITLE> 6: </HEAD> 7: <BODY text="#000000" bgcolor="#ffffff"> 8: 9: <A HREF="mpd.html">Mpd 5.9 User Manual</A> 10: : <A HREF="mpd1.html">Introduction</A> 11: : Overview  12: Previous: <A HREF="mpd1.html">Introduction</A>  13: Next: <A HREF="mpd3.html">Organization of this manual</A> 14: 15: 16: <HR NOSHADE> 17: <H2><A NAME="2"></A>1.1. Overview<A NAME="overview"></A></H2> 18: Mpd is a netgraph(4) based implementation of the multi-link 19: PPP protocol for FreeBSD. It is designed to be both fast 20: and flexible as it handles configuration and negotiation in 21: user land, while routing all data packets strictly in the 22: kernel.  23: Mpd has unified support for many link types: 24: <ul> 25: <li>modem to connect using different asynchronous 26: serial connections, including modems, ISDN terminal adapters, 27: and null-modem. 28: Mpd includes event-driven scripting language for modem 29: identification, setup, manual server login, etc.</li> 30: <li>pptp to connect over the Internet using 31: the Point-to-Point Tunneling Protocol (PPTP). 32: This protocol is supported by the most OSes and hardware vendors.</li> 33: <li>l2tp to connect over the Internet using 34: the Layer Two Tunneling Protocol (L2TP). 35: L2TP is a PPTP successor supported with modern clients and servers.</li> 36: <li>pppoe to connect over an Ethernet port 37: using the PPP-over-Ethernet (PPPoE) protocol. 38: This protocol is often used by DSL providers.</li> 39: <li>tcp to tunnel PPP session over a TCP connection. 40: Frames are encoded in the same was as asychronous serial connections.</li> 41: <li>udp to tunnel PPP session over a UDP connection. 42: Each frame is encapsulated in a UDP datagram packet.</li> 43: <li>ng to connect using different devices supported by netgraph. 44: Netgraph is highly modular kernel networking system, 45: supporting synchronous serial connections, Cisco HDLC, Frame Relay, and other protocols.</li> 46: </ul> 47:  48: It supports numerous PPP sub-protocols and extensions, such as: 49: <ul> 50: <li>Multi-link PPP</li> 51: <li>PAP, CHAP, MS-CHAP and EAP authentication </li> 52: <li>traffic compression (MPPC, Deflate, Predictor-1)</li> 53: <li>traffic encryption (MPPE, DESE, DESE-bis)</li> 54: <li>IPCP and IPV6CP parameter negotiation</li> 55: </ul> 56:  57: Depending on configured rules and connection parameters mpd can operate 58: as usual PPP client/server or forward connection unmodified 59: to other host using any supported link type providing LAC/PAC/TSA 60: functionality for building distributed access networks. 61: Mpd also includes many additional features: 62: <ul> 63: <li>IPv4 and IPv6 support</li> 64: <li>Telnet and HTTP control interfaces.</li> 65: <li>Different authentication and accounting methods (RADIUS, PAM, script, file, ...)</li> 66: <li>NetFlow traffic accounting</li> 67: <li>Network address translation (NAT)</li> 68: <li>Dial-on-demand with idle timeout </li> 69: <li>Dynamic demand based link management (also known as ``rubber bandwidth'') </li> 70: <li>Powerful chat scripting language for asynchronous serial ports </li> 71: <li>Pre-tested chat scripts for several common modems and ISDN TAs</li> 72: <li>Clean device-type independent design </li> 73: <li>Comprehensive logging</li> 74: </ul> 75:  76: Mpd was originally developed at Whistle Communications, Inc. 77: for use in the Whistle InterJet. 78: It is based on the original <code>iij-ppp</code> user-mode PPP code, 79: though it has been completely rewritten since then. 80: Mpd is now hosted on sourceforge.net 81: <A href="http://sourceforge.net/projects/mpd/">MPD Project Page</A>. 82:  83: 84: 85: <HR NOSHADE> 86: <A HREF="mpd.html">Mpd 5.9 User Manual</A> 87: : <A HREF="mpd1.html">Introduction</A> 88: : Overview  89: Previous: <A HREF="mpd1.html">Introduction</A>  90: Next: <A HREF="mpd3.html">Organization of this manual</A> 91: 92: 93: 94: </BODY> 95: </HTML>