I wish to suggest a video for a tutorial on how to setup firewall rules across different networks to establish communication like SSH, web service, etc.
I have gone through the videos about setting up firewall rules to setup OpenVPN and separate LAN and IoT network. However, communication is lost from LAN to IoT network when OpenVPN is in place. Further research suggested that there is virtual IP assigned to VPN interface which may have caused the problem. I wish to have a tutorial for firewall configuration to establish communication from LAN to IoT network. Thanks.