![]() The idea is to have another device in the local network that can be accessed through a virtual private network with ssh. But these applications also run behind your router firewall.īut there is a technique called ssh port forwarding that can resolve this. ![]() This also applies to hobbyist applications such as a Node-Red instance, your Wifi router or a pi-hole installation in your local network that you might want to have access to from anywhere. Therefore these devices are isolated from the outside by firewall and NAT. Often that makes sense as they operate an open web server on port 80 (http) or they have a low security web application setup with only basic login. Many industrial IoT applications have parameters that need to be configured or they contain interesting information but the device they are running on is not accessible in terms of OS (operating system) and it is protected from external access through firewalls. Using ssh port forwarding to remotely connect to a closed device running a web server behind a firewall
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