NodeMCU+Relay+Blynk Local server, with IFTTT and port forwarding

I have a blynk local server set up on a windows machine, and I’m trying to get IFTTT working, but I can’t get a return from the IFTTT service because I don’t know what to enter in the URL field of the web hook. At the same time, I can’t seem to set up port forwarding on the server, because all the commands I found were
sudo iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
sudo iptables -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 9443

and these commands do not work on Windows. My wireless router is a D-link DSL-224.
Also, will enabling port forwarding on these allow me to control my device when not connected to the local network?

I also can’t seem to setup/access the admin interface on my local server