This means that it is easy to roam from Wi-Fi network to Wi-Fi network, or from a Wi-Fi network to a cell network, or from a Wi-Fi network to a wired connection – and so on.Īnother nice feature Mosh provides is real-time character echo. If the server gets a sequence number that is higher than the one it previously sent, it’s smart enough to figure out that the client has moved to another connection. The server and the client keep track of what has been sent using sequence numbers. Under SSH, the server just sends some bytes downstream to the client to be interpreted. This builds on traditional remote connection protocols like Telnet and SSH. Mosh uses a new protocol called the State Synchronization Protocol (SSP). It’s annoying, but I’ve done it countless times and I’m sure you have as well. All I can do is kill the session and log in again. I open the lid and type in the terminal window and nothing happens. My all-time favorite is closing the lid while forgetting that I’m logged into a remote machine via SSH. Or, as they say in IT, it’s a PEBKAC (problem exists between keyboard and chair). Other times it’s not the fault of the connection, but rather the user. Wi-Fi connectivity, as many people have found, is often spotty, and it’s impossible to change connections, say from Wi-Fi to LTE, without breaking a connection. SSH assumes a reliable wired connection, which isn’t always the case when users go mobile. It’s a great tool, but it was designed in the 90s, an era before mobile computers on Wi-Fi became common. It’s a secure, encrypted replacement for Telnet. Secure Shell is indispensable for administrators, programmers and power users who need to log into servers, either across the hall or across the country.
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