from the /etc/issue file), configure the Banner option: To allow access only for some users, add this line:
Whenever changing the configuration, use sshd in test mode before restarting the service to ensure it will be able to start cleanly. Sshd is the OpenSSH server daemon, configured with /etc/ssh/sshd_config and managed by rvice. For example -oKexAlgorithms=+diffie-hellman-group1-sha1. Some options do not have command line switch equivalents, but you can specify configuration options on the command line with -o. With such a configuration, the following commands are equivalent All options can be declared globally or restricted to specific hosts. The client can be configured to store common options and hosts. If the server only allows public-key authentication, follow SSH keys.
OpenSSH is occasionally confused with the similarly-named OpenSSL however, the projects have different purposes and are developed by different teams, the similar name is drawn only from similar goals. OpenSSH is developed as part of the OpenBSD project, which is led by Theo de Raadt.
SSH TUNNEL KEEP ALIVE SOFTWARE
It was created as an open source alternative to the proprietary Secure Shell software suite offered by SSH Communications Security. OpenSSH (OpenBSD Secure Shell) is a set of computer programs providing encrypted communication sessions over a computer network using the Secure Shell (SSH) protocol.
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