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The SSH utility (when invoked with option -X or option ForwardX11) tunnels X11 traffic from remotely invoked clients to the local server. It does so by setting at the remote site the DISPLAY environment variable to point to a local TCP socket opened there by sshd, which then tunnels the X11 communication back to ssh.
It uses an adaptive system that predicts whether the application running on the server will decide to echo the user's keystrokes or deletions. [6] [7] The main drawbacks of Mosh are additional prerequisites to the server, that it lacks some special features of SSH (such as connection forwarding) and the lack of a native Windows client. [2]
In X, the server runs on the user's computer, while the clients may run on remote machines. This terminology reverses the common notion of client–server systems, where the client normally runs on the user's local computer and the server runs on the remote computer. The X Window terminology takes the perspective that the X Window program is at ...
SecureCRT is a commercial SSH and Telnet client and terminal emulator by VanDyke Software. Originally a Windows product, VanDyke later added a Mac OS X version in 2010 with release v6.6 [ 3 ] [ 4 ] and a Linux version in 2011 with release v6.7.
X11, Wayland: Unix-based Rxvt is a terminal emulator for the X Window System, and in the form of a Cygwin port, for Windows SecureCRT: Character: Telnet, SSH: macOS, Windows: SecureCRT is a commercial terminal emulator for Linux, macOS and Windows SyncTERM: Character: raw TCP socket, rlogin, SSH, Serial port, Telnet: CLI , SDL, X11
Nested X servers like Xnest or the more modern Xephyr (or start a real X server from inside the jail) Accessing the chroot via SSH using the X11 forwarding (ssh -X) feature; xchroot an extended version of chroot for users and Xorg/X11 forwarding (socat/mount) An X11 VNC server and connecting a VNC client outside the environment.
The X Window System is based on a client–server model: a single server controls the input/output hardware, such as the screen, the keyboard, and the mouse; all application programs act as clients, interacting with the user and with the other clients via the server. This interaction is regulated by the X Window System core protocol.
This output would be produced by a ssh-keygen -r host.example.com. command on the target server by reading the existing default SSH host key (Ed25519). [ 5 ] With the OpenSSH suite, the ssh-keyscan utility can be used to determine the fingerprint of a host's key; using the -D will print out the SSHFP record directly.