I've installed incrediblepbx13-raspbian8-gvoauth on my RaspPi3. Everything seems to be working except the FQDN side of travelin man 3. I've followed the tutorial to the tee. I have set up 3 FQDN;s in the system which do update when the address is changed, but I cannot connect from any of the locations that I have ddns set up at. Ipchecker and iptables-restart come back without any errors. I have to use portknocker to be able to connect from any outside locations. Also there is no secure-iptables command in the /root/ directory. Can someone help Please