[lug] Setting values in IP headers

[John Hernandez]

This can be done with Linux netfilter, for example 'iptables -j TOS 
--set-tos <value>'.  Run 'iptables -j TOS -h' to see a list of possible 
values.

I'm not sure how this is implemented in C, but the netfilter source 
might be a good place to start.

http://www.netfilter.org/documentation/

Budyanto Himawan wrote:
> Hi,
>  
> Does anybody know if it's possible to change values to some fields
> in the IP headers (in particular the TOS field)? Is there a c function 
> that can achieve this?
>  
> I'm trying to see if I can control the TOS fields of ip packets going 
> out of my linux box.
>  
> Thanks
> 
> 
> ===========================
> Budyanto Himawan
> budyanto_himawan at yahoo.com
> ===========================
> 
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