tested v1.0.9.p1 on Solaris 2.5.1/2.6 and HP-UX 10.20.
It worked fine,
may need little fixes:
doesn´t substitute "$11", so i had to change
this to /bin/ksh to get FCT work. I think,
only the scripts which include etc/gateway.sh need to be changed - so change firewall, fw_rules, cgi-bin/firewall.cgi, cgi-bin/firewall_log.cgi,