PRTG is working very well locally. From inside the firewall, I can access PRTG from any PC on port 443. However, I cannot access it via web browser or IOS app from outside the firewall.
The firewall seems to be working well. I have a TCPDUMP from the network local to the PRTG PC, showing that the packets are passed to PRTG, but PRTG quickly ends the connection (five or 6 packets total).
Are there any configuration items inside of PRTG that might not allow remote access?