Re: Re[2]: packet modification

["Mario Lobo" <mlobo () ocp nlink com br>]

Hi Kifah and JF;

I need to do the same using  FreeBSD. I think that the LKM approach seems more 
suitable. Do any of you have any simple code samples on that direction? FreeBSD 
does not use IPTABLES so that's a no-no for me. The libcap approach, as we 
know, doesn't do what we need.

If any of you know of something, PLEASE let me know !! I'll do the same !!

Thanks,

> Hello John,
>
> Tuesday, November 4, 2003, 6:39:33 AM, you wrote:
>
> JF> Hi Kifah,
>
> JF> I tried doing something similiar a little while ago and couldn't find any
> JF> good ways to stop the packets from getting to the network stack.  I found
> JF> two possible ways, one was to catch them at the kernel level using a
> JF> LKM(loadable kernel module), and the other was to use  iptables to drop
> JF> them and since libpcap captures them before iptables drops them you can
> JF> retransmit the packets.  I cant remember the name of the library to
> JF> interact with iptables but if you need it email me offline and i'll look
> JF> it up, i'm in class right now.  And if you find a better way let me know.
>
> JF> john fastabend
>
>
>
> Well, i forgot to mention that my ipsec-bridges operate on openbsd 3.3
> Nevertheless i would appreciate it if you send me the name of
> library.I will email you over that.
>
> Thanks
>
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mlobo () ocp nlink com br
http://www.mariolobo.b3.nu
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