Can't configure port forwarding

This morning I tried to set up port forwarding on a machine I have on another network, in order to allow SSH access. The relevant config page requires these fields (translating from italian [here's the original screenshot](https://risorse.tim.it/content/dam/flytoco-areapubblica-aemfe/tim_it/assistenza/assistenza-tecnica/guide-e-manuali/c8/C8_img_13.jpg)) to be filled:

Name: _________
Protocol: __________
Remote host IP address: ___.___.___.___ ~ ___.___.___.___
Host LAN: ___________
WAN port: ____ ~ ____
LAN host port: ____

Now, as far as I understand, - Name is unimportant and I can put anything I want in it, - Protocol should be TCP - Host LAN should be the IP that the device I want to connect to (a workstation connected to the router via Ethernet) was assigned - WAN port is the port I want to expose to the outside, e.g. 9022, - LAN host port is 22, for SSH - Remote host IP address is what puzzles me a bit, I initially thought I could do 192.168.1.1 ~ 192.168.1.255, which should include the router. Based on https://canyouseeme.org/ , the above settings are wrong, as the site can't see me on 9022. --- I also saw [this thread on an italian forum](https://forum.fibra.click/d/11544-apertura-porte-su-tim-hub/4) that suggests that ___.___.___.___ ~ ___.___.___.___ should be filled with the address of the router, which for me means 192.168.1.1 ~ 192.168.1.1. The OP did not reply back asking more, so I presume the settings worked for them.