Is Port 443 blocked by the isp ?

Im currently trying to set up duckdns so i can remotely access my home network more precisely my virtual machine that contains hass.io (bridged mode).
Setup: my fizz router is setup as a modem, i plugged my own router flashed with OpenWrt.
Problem: No matter how i try to forward port 443 on my route, i cant access my vm from outside my network. The thing is that it works with plex and remoted desktop.. but not 443... Any ideas ? Port 21 seems to be blocked also. I aslo tried to create an inbound rule in windows 10 firewall.. did not worked

Answers

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