It is not safe to expose your computer to the internet with certain ports exposed, so your router normally acts as the primary defense against various probes and attacks from the internet. If a target computer has an open port, then it can receive data on that port. Network traffic is sent out with a specific port in mind. The SSH components that are needed to connect to a remote server are usually preinstalled on a Linux system, but if not then you can find all the necessary packages in the package manager of your choosing. You will need to configure port forwarding on your router, and you will also need to specify the ssh port that will be allowed through the router, and then the IP address of the computer that is going to be receiving Port 22 based connections from outside the network. The server that hosts the SSH connection should be public facing with access to the internet if you require remote access. If you need to reach a remote service, or if a remote computer needs to reach a service on your computer, then you generally use SSH port forwarding, also known as SSH tunneling. Start training Setting Up SSH Port Forwarding in Linux ![]() This is great if you manage essential services like a web server or any other internet facing service that requires immediate attention when things go wrong. There are mobile apps for both iOS and Android so you can connect remotely and securely even from your tablet or smartphone. You aren't even limited to traditional computers when you want to use SSH either. Although SSH has traditionally been associated with Linux systems, there are plenty of programs that allow you to establish SSH connections from the operating system of your choice.
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