Users can override the default system-wide client settings and choose their own defaults. User-specific Client Configuration Files So if any output is produced at all, it should be sent to stderr or else a log file. If it sends anything to stdout that will interfere with SFTP sessions, among others. See the sshd(8) manual page in the section "SSHRC" for more information. It is not run as root, but instead as the user who is logging in. This file resides on the server and programs in this file are executed there by ssh(1) when the user logs in, just before the user's shell or designated program is started. See ~/.ssh/known_hosts below for more explanation or see sshd(8) for further details of the format of this file. This file should be prepared by the system administrator to contain the public host keys of all necessary hosts. This contains the system-wide list of known host keys used to verify the identity of the remote host and thus hinder impersonation or eavesdropping. So with that configuration, it is enough to enter ssh arc and the rest of the information gets filled in automatically. The configuration options are described in detail in ssh_config(5).īelow a shortcut is made for connecting to. This file defines all the default settings for the client utilities for all users on that system. Care should be used when nesting configurations. The Include directive can be specified anywhere in the configuration file even inside a Match or Host block. The user's own configuration file and the system-wide configuration file can also point to additional configuration files to be included using the Include directive starting with OpenSSH 7.3. Both can be overridden, in many cases, by specifying various options or parameters at run time. These defaults can be overridden in most cases by the user's own default settings in a local configuration file. System-wide client files set the default configuration for all users of OpenSSH clients on that system. 3 Mapping Client Options And Configuration Directives.2.4.4 Legacy SSH1 Protocol Keys ~/.ssh/identity ~/.ssh/identity.pub.2.4.3 Legacy DSA Keys ~/.ssh/id_dsa ~/.ssh/id_dsa.pub.2.3 Local Account Public / Private Key Pairs.2.1.2.2 About the Contents of the known_hosts Files.2.1.2.1 Manually Adding Public Keys to ~/.ssh/known_hosts.2.1.1.1 Local Override of Client Defaults.2 User-specific Client Configuration Files.1 System-wide Client Configuration Files.
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