Tom Eastep <teastep <at> shorewall.net> writes:

> 
> Tom Eastep wrote:
> > Johannes Graumann wrote:
> >> Tom Eastep wrote:
> >>> Then the output of "shorewall dump" (compressed) would be helpful.
> >> Attached. Thanks for your time!
> >>
> > 
> > /proc
> >     ...
> >    /proc/sys/net/ipv4/ip_forward = 0
> > 
> > 
> > Looks like you need to check IP_FORWARDING again.
> 
> And be sure that something else in the Etch configuration isn't resetting
> forwarding. See if the above turns to '1' after a '/sbin/shorewall restart';
> if so, it could be that it's being reset by another reboot step.

So here it is:
> reboot

> grep IP_FORWARD /etc/shorewall/shorewall.conf
IP_FORWARDING=Yes

> less /proc/sys/net/ipv4/ip_forward
0

> shorewall restart
> less /proc/sys/net/ipv4/ip_forward
0

> shorewall stop
> less /proc/sys/net/ipv4/ip_forward
0

> shorewall clear
> less /proc/sys/net/ipv4/ip_forward
1

> shorewall start
> less /proc/sys/net/ipv4/ip_forward
1

This, I suppose, implies that something is mocking with that ip_forward bit
after shorewall has run (?). Only other ipfilter related piece of software I run
is fail2ban - which to my knowledge did not change in conjunction with this
recent problematic shorewall update. I will have to investigate whether that's
the toublemaker. Any pointers on how to actually figure out what's changing the
ip_forward?

Thanks for any insight,

Joh



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