We've spent most of this week reengineering a public-facing VoIP platform for Asterisk 16 and FreePBX 15. For ease of deployment, we're using our new Incredible PBX 16-15 as the base install although this could be easily modified for other aggregations. A KVM platform is required in order to take advantage of ipset for country-blocking and the VoIP Blacklist. The Incredible PBX install takes under 30 minutes on most KVM VPS hosted servers. Would love additional input/feedback on the IPtables firewall design if any of you have some time. From the Incredible PBX 16-15 base install, it's about a 2-minute scripted setup to convert it into a public-facing PBX with open SIP access to the Internet. More details and docs here: https://pbxinaflash.com/community/threads/incredible-16-15-for-centos-7.23810/page-4#post-142790
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