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19.1 Legacy Series / Re: How to edit the notorious "Default deny rule"
« on: February 18, 2019, 06:08:00 pm »...your problem is in your word asymmetrical routing.That's exactly i want to allow. We build many Dahua surveillance systems and connect them to a SmartPSS on a PC in our shop(behind the OPNsense) by a serial number with corresponding user and password. When the SmartPSS tryes to connect, it sends request to Dahua P2P servers, then Dahua P2P servers contact the corresponding NVR/DVR, which is registers in Dahua servers via UPnP on random ports behind their router, and corresponding NVR/DVR tryes to connect to SmartPSS, but can't because of "Default deny rule"
With simple router and with IPFire that works out of the box.