Re: how to change the tos

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I think you can set only a few values as TOS, 0x0, 0x2, 0x4 and 0x8 .
If you want more, you can use the DSCP target.


On Tue, 8 Feb 2005 04:46:23 -0800 (PST), Alaios <alaios@xxxxxxxxx> wrote:
> Hi i want to apply the patch ftos in order to change
> the tos field in ip packets...
> The problem is that i don't know how to do that
> One guy suggest me the
> http://www.paksecured.com/patches/
> but the patch is for the 2.4 kernel  but i use the
> 2.6.10 kernel.
> In addition to this i have noticed that the 2.6 kernel
> has the following option
> CONFIG_IP_NF_MATCH_TOS
> I don't know if i need to compile it as module or i
> should insert them directly to the kernel...
> Afte recompiling the kernel i have run the make
> KERNEL_DIR=/usr/src/linux-2.6.10 but still the command
> 
> iptables -t mangle -A PREROUTING -i eth0 -p tcp
> --dport 22 -j TOS --set-tos 15
> iptables v1.2.11: Bad TOS Value
> Any suggestion?
> 
> 
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