Remote accessing server

Hello everybody!

I have already up running production server in my local network. Now i can access my server from different computer inside the network. Now i want to access it outside of my local network through web… i change my webserver_port to 8090.

Any ideas what should i do so that i can access my server remotely?

Thank you for helping me so much so far this forum is amazing…
Kudos to erpnext foundation team…Ive learned a lot here…

@cpsolution please look on this :