Understanding IP forwarding

Graham Butler g.butler at hud.ac.uk
Mon Aug 6 07:09:12 UTC 2012

> On 08/03/2012 11:35 AM, Rashkae wrote:
> > You might be running into issues with the Kernel IP Spoofing detection.
> >
> > Verify (and change) that /proc/sys/net/ipv4/conf/all/rp_filter is 0 (and
> > not 1) and try the test again.
> >
> To ammend my instructions a bit, disable the rp_filter settings in
> /etc/sysctl.conf and use sudo sysctl -p to apply the changes.
> Sometimes, I just do things the old fashioned way for no good reason.


You win a gold on this one. On changing the rp_filter from 1 to 0 everything worked.

All the best,


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