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38 lines
1.6 KiB
38 lines
1.6 KiB
This target is only valid in the |
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.B nat |
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table, in the |
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.B PREROUTING |
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and |
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.B OUTPUT |
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chains, and user-defined chains which are only called from those |
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chains. It specifies that the destination address of the packet |
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should be modified (and all future packets in this connection will |
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also be mangled), and rules should cease being examined. It takes the |
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following options: |
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.TP |
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\fB\-\-to\-destination\fP [\fIipaddr\fP[\fB\-\fP\fIipaddr\fP]][\fB:\fP\fIport\fP[\fB\-\fP\fIport\fP]] |
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which can specify a single new destination IP address, an inclusive |
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range of IP addresses. Optionally a port range, |
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if the rule also specifies one of the following protocols: |
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\fBtcp\fP, \fBudp\fP, \fBdccp\fP or \fBsctp\fP. |
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If no port range is specified, then the destination port will never be |
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modified. If no IP address is specified then only the destination port |
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will be modified. |
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In Kernels up to 2.6.10 you can add several \-\-to\-destination options. For |
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those kernels, if you specify more than one destination address, either via an |
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address range or multiple \-\-to\-destination options, a simple round-robin (one |
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after another in cycle) load balancing takes place between these addresses. |
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Later Kernels (>= 2.6.11-rc1) don't have the ability to NAT to multiple ranges |
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anymore. |
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.TP |
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\fB\-\-random\fP |
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If option |
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\fB\-\-random\fP |
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is used then port mapping will be randomized (kernel >= 2.6.22). |
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.TP |
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\fB\-\-persistent\fP |
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Gives a client the same source-/destination-address for each connection. |
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This supersedes the SAME target. Support for persistent mappings is available |
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from 2.6.29-rc2. |
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.TP |
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IPv6 support available since Linux kernels >= 3.7.
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