I installed IncrediblePBX 13-12.3 on Ubuntu, on Vultr. All was working great. Then I moved my home. I ran add-fqdn to add home.mydomain.com (which is set up through a DDNS service to update to point to my local IP address regularly, and that works). I look in iptables and I see my current IP address listed. Yet, every single day, the phones don't work until I run the portknock utility on my iPhone. Once I do that, all is well. I just need to repeat the running of PortKnock to open the firewall to my IP address every single day. Does anyone have any suggestions? This is frustrating. I guess I could just create a new instance and copy over all my settings, but I'd prefer not to do that. Thanks!