![]() ![]() Typing over an SSH connection will not see their keystrokes until they areĮchoed by the remote end on a flaky connection, that can make typing " TELNET", the project's web site proclaims, " had some Whenever the state of one of those objects changes, allowing the other end The server end, instead, owns an objectĭescribing the state of the screen. Object, maintained primarily on the client side, represents the keystrokes Objects and communicating changes to the state of those objects. The actual protocol is called "state synchronization protocol" (SSP) it isīuilt on the idea that the endpoints are maintaining copies of the same Mosh claims toĪvoid that behavior - and your editor's tests suggest that the claim is ^C and having to sit through a long wait while all of theĪlready-transmitted output makes its way across the link. The annoyance that comes from interrupting a verbose command with The protocol is designed with its own flowĬontrol that, among other things, is designed to avoid filling up networkīuffers along the path between the systems. In theory,Įncryption at this level is more robust than the TCP-based encryption usedīy SSH only the latter is subject to TCP resetĪttacks, for example. To eavesdrop on the connection or inject packets into it. Receipt if all works well, that should make it impossible for an attacker Implementation) before sending and authenticated on Packets make it through any firewalls between the local and remote systems.Įach UDP packet is separately encrypted (using the OpenSSL AES Operation, but that may not be true of the task of ensuring that its UDP Installing Mosh itself can be an entirely unprivileged That is one place where one can encounter minor setupĭifficulties. Once that's going, the SSH link is closedĪnd discarded the client and server talk directly using a UDP-based Once an SSH connection is established, though, the only thing Mosh uses itįor is to start a mosh-server process at the remote end and toĮxchange keys with that process. ![]() News being, of course, that one's existing SSH authentication setup will work Passwords, distributing public keys, etc. One still has to go through the usual authentication dance - entering Scenes, SSH will be used to make the initial connection to the remote host. ![]() ![]() " mosh remote-host" will set up a connection but, behind the Mosh doesn'tīother with little details like listening for new connections orĪuthentication it relies on SSH for those. You still need SSH around to set up a Mosh connection. Quite correct, though, for a couple of reasons. In short, if Mosh meets your needs, there is little excuse for notĬalling Mosh an "SSH replacement" (as the project's web site does) is not Setup is nearly zero-effort, with one small exception notedīelow. Operating system one can imagine, and binary packages are readilyĪvailable. It appears to be under active developmentĪnd to be reasonably widely used. Mosh has been around since 2011 or so the 1.3 Reconnection ability, performance, and security at least some of those are The Mosh developers make a number of claims about its For some years now, your editor has heard glowing reviews of Mosh - the "mobile shell" - as a replacementįor SSH. ![]()
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