[CentOS] Centos6.4 routing problem

>
> Check if you should have this line. It has been a long time I needed to
> use iptables for forwarding, nut I do not remember using -A FORWARD and
> -o together.
> Do you at all need all those -A FORWARD lines for masquerading?
>

Long time here too... But MASQUERADE on both interfaces feels wrong given
what it does... Shouldn't this only be on the 'outside' of a router... Or
did this change at some point in the last few years?