Use simple shell function to instantly create known_hosts entries for specified host, including its IP address and remove outdated public host keys.
Tag: OpenSSH
Global known_hosts file located in /etc/ssh/ssh_known_hosts and user managed ~/.ssh/known_hosts contains known host public keys. Due to its nature these files can contain multiple entries using the same key. It is not a problem, but merging entries using the same key is the first step that is necessary to inspect it visually and to verify […]
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How to disconnect idle SSH clients
Disconnect idle SSH clients using built-in client alive mechanism.
There are rare cases when known hosts file becomes corrupted, so basic ssh utilities fail within custom built shell scripts due to ~/.ssh/known_hosts is not a valid known_hosts file error.
From time to time I have to update passwords used to secure private keys to keep myself a bit more sane. I will demonstrate simple and straightforward way to accomplish this task.
Sometimes I want to access a private server at home from a different network while being on the go. The easiest way to do this is to use autossh utility to create a secure and persistent reverse SSH tunnel to the publicly available server.