IP translation
Bill Davidsen
davidsen at tmr.com
Thu Mar 27 21:27:19 UTC 2008
tony.chamberlain at lemko.com wrote:
>
> I need a MAGIC BOX to do this
>
>
>
>
> ------ IP ADD 1, PORT 1 ----> MAGIC BOX -----> IP ADD 2, PORT 2
> (eg convert something like 192.168.5.191/3660 to something like
> 192.168.5.100/222
> but this is just an example).
>
> Can anyone suggest anything? Preferably with a router (we have Linksys
> BEFSX41)
> or with CentOS 4.5 (would have to be on the outgoing side).
>
You can do this with a trivial iptables setup, although you will want to
use some thought about the setup, use DNAT on the incoming packets. I
would worry about overhead, but if you have enough capacity to run 100
copies of MySQL, you have either tons of capacity or larger problems
than iptables overhead.
> What it actually will be used for is to run 100 or so instances of mysql
> on the same
> machine but on different ports. Then each instance of mysql will have
> its onw logical
> IP address.
>
--
Bill Davidsen <davidsen at tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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