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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>
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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>
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