Open or forwarded ports are the most common attack vectors for a network, so you will want to keep as many closed as possible.
The act of poking (the right kind of) ‘port’ holes in the firewall to permit certain kinds of traffic from the internet through the firewall via those ports, and through to a specific device on your network like your Helium miner/hotspot. It’s also there to BLOCK nasties from the Internet coming into your network through open ports. The (very simplified) purpose of a firewall is to ALLOW devices from within your network to safely make connections out to devices and services on the internet.
Routers typically have some kind of inbuilt firewall. HTTP (used for browsing) operates on port 80, HTTPS (used for secure browsing) uses port 443, and FTP runs over port 20 or 21, etc, etc, etc.Īccording to Helium’s security doco, Helium hotspots communicate with their peers across the internet on TCP port: 44158. In fact, there are 65,535 ports that can be used for communication in TCP/IP.ĭifferent ports are used for different network protocols and the first thousand or so are reserved for specific applications. Ports and Routers/Firewallsĭevices on the internet communicate with each other over different ‘ports’.
There are thousands of different routers and an equal number of ways to set up port forwarding on those devices, so this is NOT a how-to guide! This guide instead, is intended to explain port forwarding a little so it’s better understood, and to give you a few resources to follow to try and organise it for yourself – if you need to. You may have heard that setting up port forwarding is beneficial in certain situations where your Helium Miner/Hotspot is ‘relayed’, and you are probably wondering what that means, what port forwarding is, and how you might go about it…
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