The OpenSSH SSH daemon supports SSH protocol 2 only. Each host has a host-specific key, used to identify the host. Whenever a client connects, the daemon responds with its public host key. The client compares the host key against its own database to verify that it has not changed. Forward secrecy is provided through a Diffie-Hellman key agreement. This key agreement results in a shared session key. The rest of the session is encrypted using a symmetric cipher. The client selects the encryption algorithm to use from those offered by the server. Additionally, session integrity is provided through a cryptographic message authentication code (MAC).

Finally, the server and the client enter an authentication dialog. The client tries to authenticate itself using host-based authentication, public key authentication, challenge-response authentication, or password authentication.

If the client successfully authenticates itself, a dialog for preparing the session is entered. At this time the client may request things like allocating a pseudo-tty, forwarding X11 connections, forwarding TCP connections, or forwarding the authentication agent connection over the secure channel.

After this, the client either requests a shell or execution of a command. The sides then enter session mode. In this mode, either side may send data at any time, and such data is forwarded to/from the shell or command on the server side, and the user terminal in the client side.

Openssh Server Windows

Navigate to the OpenSSH directory that was create on the file system as part of the manual Github OpenSSH zip extraction or from the scripted OpenSSH. Openssh.com Description:An open-source SSH client and server. When the OpenSSH Authentication Agent service is started, it is running as LocalSystem in its own process of ssh-agent.exe.

Openssh Windows Manual

When the user program terminates and all forwarded X11 and other connections have been closed, the server sends command exit status to the client, and both sides exit.

Open Ssh Client What Is It

Manual Uninstallation. Both OpenSSH and Cygwin continue to improve, and it's getting to the point where the tools to do most of the conversion work I. OpenSSH on i Manual Pages. The OpenSSH project provides a 'reference manual' for their tools in Unix 'man pages'.