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Wed Mar 17 00:39:23 2021 UTC (3 years, 7 months ago) by misho
Branches: mpd, MAIN
CVS tags: v5_9p16, v5_9, HEAD

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>MPPC protocol</TITLE> 6: </HEAD> 7: <BODY text="#000000" bgcolor="#ffffff"> 8: 9: <A HREF="mpd.html">Mpd 5.9 User Manual</A> 10: : <A HREF="mpd17.html">Configuring Mpd</A> 11: : <A HREF="mpd24.html">Compression (CCP) layer</A> 12: : MPPC protocol  13: Previous: <A HREF="mpd24.html">Compression (CCP) layer</A>  14: Next: <A HREF="mpd26.html">IPCP layer</A> 15: 16: 17: <HR NOSHADE> 18: <H2><A NAME="25"></A>4.6.1. MPPC protocol<A NAME="mppc"></A></H2> 19:  20: Mpd implements Microsoft Point-to-point compression (MPPC) 21: CCP subprotol. To enable it, 'mppc' option should be enabled at the CCP layer. 22: MPPC CCP subprotocol consists of MPPC compression and MPPE encryption parts. 23: To make MPPC CCP actually do something you should enable some of them using 24: options below. 25:  26: <dl> 27: 28: <dt><code>set mppc accept option ... </code><dd> 29: <dt><code>set mppc deny option ... </code><dd> 30: <dt><code>set mppc enable option ... </code><dd> 31: <dt><code>set mppc disable option ... </code><dd> 32: <dt><code>set mppc yes option ... </code><dd> 33: <dt><code>set mppc no option ... </code><dd> 34: These commands configure various MPPC options. 35: 36: <dt><code>compress</code><dd>Enables MPPC compression. This is the only compression method supported by 37: Microsoft Windows RAS. 38: Note: This option requires ng_mppc node to be built with compression support, 39: which is disabled by default, requiring external compressor code. 40: Open-source implementation of this code, based on RFC2118, could be found 41: at http://mavhome.dp.ua/MPPC/. But MPPC compression algorithm itself covered 42: by US patent, so you may need to contact Hi/Fn Inc. to obtain their proprietary 43: implementation. 44: If kernel support is not detected, compression will not be negotiated. 45: Use 'show version' command to get actual status. 46: The default is disable. 47: 48: <dt><code>e40</code><dd>Enables 40-bit MPPE encryption. 49: The default is disable. 50: 51: <dt><code>e56</code><dd>Enables 56-bit MPPE encryption. 52: The default is disable. 53: 54: <dt><code>e128</code><dd>Enables 128-bit MPPE encryption. 55: Note: in order for MPPE encryption to work, MS-CHAPv1 or MS-CHAPv2 auth 56: is mandatory, because the MPPE keys are generated using the authentication 57: results. If MS-CHAP auth is not used by link, encryption will not be negotiated. 58: The default is disable. 59: 60: <dt><code>stateless</code><dd>Enables stateless mode. This mode requires more CPU time and is somewhat 61: less secure, but allows faster recovery in the face of lost packets. 62: The default is disable. 63: 64: <dt><code>policy</code><dd>If enabled, Mpd uses the MPPE-Types and MPPE-Policy info from the authentication 65: backend. 66: The default is disable. 67: 68: </dl> 69:  70: <HR NOSHADE> 71: <A HREF="mpd.html">Mpd 5.9 User Manual</A> 72: : <A HREF="mpd17.html">Configuring Mpd</A> 73: : <A HREF="mpd24.html">Compression (CCP) layer</A> 74: : MPPC protocol  75: Previous: <A HREF="mpd24.html">Compression (CCP) layer</A>  76: Next: <A HREF="mpd26.html">IPCP layer</A> 77: 78: 79: 80: </BODY> 81: </HTML>