Categories
SysOps

How to determine available authentication methods

Determine available authentication methods on the specified OpenSSH server.

Categories
SysOps

How to inspect OpenSSH client configuration

Inspect OpenSSH client configuration to search and display configured hosts.

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Uncategorized

How to revoke specific key used to login with OpenSSH

Revoke specific key used to perform key-based login with OpenSSH utilizing simple public key revocation list or OpenSSH Key Revocation List (KRL).

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How to determine which key was used to login with OpenSSH

Determine which SSH key was used to perform key-based login using public key fingerprint.

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How to display message before OpenSSH authentication

Display message before OpenSSH authentication using simple built-in mechanism.

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Uncategorized

How to manage remotely forwarded SSH authentication agent

Keeping SSH authentication agent in sync across multiple servers and terminal multiplexers is not an easy task, but can be solved by using consistent socket names used to connect to the SSH authentication agent.

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Uncategorized

How to attach to tmux session over SSH

Attach to the tmux session over SSH to continue your work.

Categories
SysOps

How to remotely execute shell function

Sometimes it is very convenient to define shell function and execute it remotely.