Re: NAT - randomize the port selection

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On Monday 2008-08-11 10:15, Pavol Rusnak wrote:

> Hello!
>
> Recently there was an issue identified on DNS module about the need to
> randomize the port selection.  I'd like to know if this is already taken care
> in NAT modules in iptables? Could you please let me know if port selection is
> already randomized in these modules ?

If the client randomizes its source port, the NAT will obviously do the same.
Then there is --random for SNAT/MASQUERADE and others.
And now there has just been a patch merged to take some secure port number
it seems.
(http://marc.info/?l=netfilter-devel&m=121912048304189&w=2 )
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