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Diffstat (limited to 'extensions/libxt_MASQUERADE.man')
| -rw-r--r-- | extensions/libxt_MASQUERADE.man | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/extensions/libxt_MASQUERADE.man b/extensions/libxt_MASQUERADE.man new file mode 100644 index 0000000..c9e3950 --- /dev/null +++ b/extensions/libxt_MASQUERADE.man @@ -0,0 +1,28 @@ +This target is only valid in the +.B nat +table, in the +.B POSTROUTING +chain. It should only be used with dynamically assigned IP (dialup) +connections: if you have a static IP address, you should use the SNAT +target. Masquerading is equivalent to specifying a mapping to the IP +address of the interface the packet is going out, but also has the +effect that connections are +.I forgotten +when the interface goes down. This is the correct behavior when the +next dialup is unlikely to have the same interface address (and hence +any established connections are lost anyway). +.TP +\fB\-\-to\-ports\fP \fIport\fP[\fB\-\fP\fIport\fP] +This specifies a range of source ports to use, overriding the default +.B SNAT +source port-selection heuristics (see above). This is only valid +if the rule also specifies one of the following protocols: +\fBtcp\fP, \fBudp\fP, \fBdccp\fP or \fBsctp\fP. +.TP +\fB\-\-random\fP +Randomize source port mapping +If option +\fB\-\-random\fP +is used then port mapping will be randomized (kernel >= 2.6.21). +.TP +IPv6 support available since Linux kernels >= 3.7. |