Question

I need help to check the possibility of establishing communication between a smartphone and a PC using a Rut955 router
I have a network with the configuration of the indicated scheme
On pc 4 there is a web server that responds correctly on tcp 80 port
I would need to access the active web server on pc 4 using a smartphone
I installed a Rut955 in the office lan and connected with the central switch, from pc 4 to Rut955 you can correctly configure it
A SIM has been activated and communication on the mobile telephone network has been activated, from STATUS / OVERVIEW the IP address 10.70.1.1 can be seen in the WAN section
On NETWORK / FIREWALL / PORT FORWARDING I added a rule setting as WAN source, TCP protocol, External Port 80, and as LAN destination, ip 10.0.0.100, Internal port 80
I would expect that if from a browser on a smartphone set on the address bar http://10.70.1.1 to see the request arrive on pc 4 and the answer return to smartphone, but it is not so
The question is: what must be done to obtain communication between smartphone and PC 4, using the Rut955 router connected as in the diagram?

Answer 1

Once your trying to access PC4's webserver from a smart phone connected to your RUT (no longer on the same subnet) you need to address PC4 via PC4's external IP address...

Go to google, type what is my IP, then try accessing it via that on your smartphone via the RUT.

Please keep in mind that some Internet Providers do indeed block traffic also on port 80, so it MAY be a good idea to port forward on your home network external port 8000 to internal port 80... Then simply access remote http://IPADDRESS:8000

If you dont have a static IP, id recommend using a DDNS service on your home network also so you can access it simply by http://yourddnsaddress.ddnsservice.org:8000