duplicating packets target

duplicating packets target

[Oguz Yilmaz]

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Hi,

Are there any way of duplicating packets(in netfilter base, patchomatic 
or any third party patch?) targeted to one host to several hosts using 
targets? (like dup-to keywords of openbsd).  If not, I think a way of 
this is to send packets to user level queue and then duplicate and 
resend. Are there any software for this?

Thanks,

-oguz

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Re: duplicating packets target

[Antony Stone]

On Sunday 04 April 2004 10:31 am, Oguz Yilmaz wrote:

> Hi,
>
> Are there any way of duplicating packets(in netfilter base, patchomatic
> or any third party patch?) targeted to one host to several hosts using
> targets?

This will obviously only work for UDP (not TCP, because of the sequence & 
acknowledgement numbers), so you might find it easiest to set up a DNAT rule 
to a multicast address, and then use a multicasting router to send the 
packets to their required destinations?

I certainly can't think of a way netfilter can make two packets out of one - 
its basic job, after all, is to turn one packet into none at all in some 
circumstances (the DROP target)....

Regards,

Antony.

-- 
Microsoft may sell more software than any other company, but McDonald's sell 
more burgers than any other company, and I think the other similarities are 
obvious...

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