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! 9: <A HREF="mpd.html"><EM>Mpd 5.6 User Manual</EM></A>
! 10: <b>:</b> <A HREF="mpd17.html"><EM>Configuring Mpd</EM></A>
! 11: <b>:</b> <EM>Network Address Translation (NAT)</EM><BR>
! 12: <b>Previous:</b> <A HREF="mpd38.html"><EM>IP address pools</EM></A><BR>
! 13: <b>Next:</b> <A HREF="mpd40.html"><EM>Control console</EM></A>
! 14:
! 15:
! 16: <HR NOSHADE>
! 17: <H2><A NAME="39"></A>4.14. Network Address Translation (NAT)<A NAME="nat"></A></H2>
! 18:
! 19: <p>This chapter describes commands for configuring Network Address
! 20: Translation on Mpd's interfaces. NAT is implemented by
! 21: <code>ng_nat(4)</code> node. To enable it on a particular
! 22: interface <code>nat</code> option should be used.</p>
! 23: <p><b>Note:</b> ng_nat node is available only on FreeBSD 6.0-RELEASE
! 24: and newer. Some additional options like setting target address
! 25: implemeted in later versions.</p>
! 26: <p>
! 27: <dl>
! 28:
! 29: <dt><b><code>set nat address <em>ip</em></code></b><dd><p>Set alias IP address. If not specified, interface IP will be used.</p>
! 30:
! 31: <dt><b><code>set nat target <em>ip</em></code></b><dd><p>Set target IP address for unknown incoming packets. If not specified,
! 32: packet will not be modified.</p>
! 33:
! 34: <dt><b><code>set nat red-addr <em>alias_addr</em> <em>local_addr</em></code></b><dd><p>Redirect traffic for public (alias) IP address to a machine on the local network.</p>
! 35:
! 36: <dt><b><code>set nat red-proto <em>proto</em> <em>alias_addr</em> <em>local_addr</em> [ <em>remote_addr</em> ]</code></b><dd><p>Redirect traffic of specified protocol for public (alias) IP address
! 37: (optionally from specified remote address)
! 38: to a machine on the local network.</p>
! 39:
! 40: <dt><b><code>set nat red-port <em>proto</em> <em>alias_addr</em> <em>alias_port</em> <em>local_addr</em> <em>local_port</em> [ <em>remote_addr</em> <em>remote_port</em> ]</code></b><dd><p>Redirect incoming connections arriving to given public (alias) address and port,
! 41: (optionally from specified remote address)
! 42: to a host and port of a machine on the local network.</p>
! 43:
! 44: <dt><b><code>set nat enable <em>option ...</em> </code></b><dd>
! 45: <dt><b><code>set nat disable <em>option ...</em> </code></b><dd>
! 46: <p>Enable and disable nat options.</p>
! 47:
! 48: </dl>
! 49: </p>
! 50:
! 51: <p>The following options are supported:</p>
! 52: <p>
! 53: <dl>
! 54:
! 55: <dt><b><code>log</code></b><dd><p>Enable statistics logging.</p>
! 56: <p>Default is disable.</p>
! 57:
! 58: <dt><b><code>incoming</code></b><dd><p>Allow unknown incoming packets to pass.</p>
! 59: <p>Default is enable.</p>
! 60:
! 61: <dt><b><code>same-ports</code></b><dd><p>Try to use same ports while aliasing.</p>
! 62: <p>Default is enable.</p>
! 63:
! 64: <dt><b><code>unreg-only</code></b><dd><p>Enables aliasing only for unregistered networks.</p>
! 65: <p>Default is disable.</p>
! 66:
! 67: </dl>
! 68: </p>
! 69:
! 70: <HR NOSHADE>
! 71: <A HREF="mpd.html"><EM>Mpd 5.6 User Manual</EM></A>
! 72: <b>:</b> <A HREF="mpd17.html"><EM>Configuring Mpd</EM></A>
! 73: <b>:</b> <EM>Network Address Translation (NAT)</EM><BR>
! 74: <b>Previous:</b> <A HREF="mpd38.html"><EM>IP address pools</EM></A><BR>
! 75: <b>Next:</b> <A HREF="mpd40.html"><EM>Control console</EM></A>
! 76:
! 77:
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