Through the LEAF packages configuration menu, choose shorwall and check the two following files:
A/ The interfaces file (entry 3) defines your
interfaces. Here connection to the net goes through ippp0 and the
connection to the internal network through eth0. So we must set:
(...) #ZONE INTERFACE BROADCAST OPTIONS net ippp0 - dhcp,routefilter,norfc1918 loc eth0 detect routestopped #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
Do not forget the "-" under the BROADCAST heading for the net/ippp0 entry.
B/ The masq file (entry 7). In this type of
setting it should look like:
(...) #INTERFACE SUBNET ippp0 eth0 #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE
Backup the shorwall.lrp package.