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Tue Feb 21 23:32:47 2012 UTC (12 years, 4 months ago) by misho
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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>Encryption (ECP) layer</TITLE> 6: </HEAD> 7: <BODY text="#000000" bgcolor="#ffffff"> 8: 9: <A HREF="mpd.html">Mpd 5.6 User Manual</A> 10: : <A HREF="mpd17.html">Configuring Mpd</A> 11: : Encryption (ECP) layer  12: Previous: <A HREF="mpd22.html">Bundle layer</A>  13: Next: <A HREF="mpd24.html">Compression (CCP) layer</A> 14: 15: 16: <HR NOSHADE> 17: <H2><A NAME="23"></A>4.5. Encryption (ECP) layer<A NAME="encryption"></A></H2> 18: This chapter describes commands that configure the Encryption Control 19: Protocol (ECP) layer. All of these commands apply to the currently 20: active bundle. 21: To use ECP you should enable encryption at the bundle level. 22: To allow encryption to be negotiated you should enable here some of 23: encryption protocols. 24: Note: In PPP, encryption should be handled by the ECP rather than CCP. 25: However, Microsoft combined both compression and encryption 26: into their ``compression'' algorithm (MPPC), which is confusing. 27:  28: <dl> 29: 30: <dt><code>set ecp key string </code><dd> 31: Sets the encryption key. 32: 33: <dt><code>set ecp accept option ... </code><dd> 34: <dt><code>set ecp deny option ... </code><dd> 35: <dt><code>set ecp enable option ... </code><dd> 36: <dt><code>set ecp disable option ... </code><dd> 37: <dt><code>set ecp yes option ... </code><dd> 38: <dt><code>set ecp no option ... </code><dd> 39: These commands configure various ECP options. Each direction of 40: traffic (transmit and receive) is independent from the other. 41: All options default to <code>disable</code> and <code>deny</code>. 42: The <code>enable</code> and <code>disable</code> commands determine 43: whether we desire the corresponding option on received data. 44: The <code>accept</code> and <code>deny</code> commands determine 45: whether we will allow the peer to request the corresponding option 46: (which we must enable on our transmitted data). 47: 48: The <code>yes</code> command is the same as 49: <code>enable</code> and <code>accept</code>. 50: The <code>no</code> command is the same as 51: <code>disable</code> and <code>deny</code>. 52: 53: </dl> 54:  55: 56: The options available at the ECP layer are: 57:  58: <dl> 59: 60: <dt><code>dese-bis</code><dd>This option enables DESE-bis (rfc 2419) encryption. 61: This algorithm implemented in user-level, so require much CPU power 62: on fast (>10Mbit/s) links. 63: The default is disable. 64: 65: <dt><code>dese-old</code><dd>This option enables DESE (rfc 1969) encryption. 66: This algorithm implemented in user-level, so require much CPU power 67: on fast (>10Mbit/s) links. 68: Note: DESE protocol is deprecated. Because of data padding 69: to the next 8 octets boundary, required by block nature of DES encryption, 70: dese-old option can have interoperability issues with other protocols 71: which work over it. As example, it is incompatible with Predictor-1 and 72: Deflate compressions. 73: The default is disable. 74: 75: </dl> 76:  77: 78: <HR NOSHADE> 79: <A HREF="mpd.html">Mpd 5.6 User Manual</A> 80: : <A HREF="mpd17.html">Configuring Mpd</A> 81: : Encryption (ECP) layer  82: Previous: <A HREF="mpd22.html">Bundle layer</A>  83: Next: <A HREF="mpd24.html">Compression (CCP) layer</A> 84: 85: 86: 87: </BODY> 88: </HTML>