The tmux terminal multiplexer is used to implement automatic session locking. It should be started from /etc/bashrc or drop-in files within /etc/profile.d/.
Unlike bash itself, the tmux terminal multiplexer provides a mechanism to lock sessions after period of inactivity. A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence.
The tmux terminal multiplexer is used to implement automatic session locking. It should be started from /etc/bashrc or drop-in files within /etc/profile.d/.
Unlike bash itself, the tmux terminal multiplexer provides a mechanism to lock sessions after period of inactivity. A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence.
To enable console screen locking, install the tmux package.
The tmux package can be installed with the following command:
$ sudo yum install tmuxA session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. Rather than be forced to wait for a period of time to expire before the user session can be locked, Red Hat Enterprise Linux 8 needs to provide users with the ability to manually invoke a session lock so users can secure their session if it is necessary to temporarily vacate the immediate physical vicinity. Instruct users to begin new terminal sessions with the following command:
$ tmuxThe console can now be locked with the following key combination:
ctrl+b :lock-session
A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate
physical vicinity of the information system but does not logout because of the temporary nature of the absence.
Rather than relying on the user to manually lock their operation system session prior to vacating the vicinity,
operating systems need to be able to identify when a user's session has idled and take action to initiate the
session lock.
The tmux package allows for a session lock to be implemented and configured.
To enable console screen locking in tmux terminal multiplexer, the vlock command must be configured to be used as a locking mechanism. Add the following line to /etc/tmux.conf:
set -g lock-command vlock. The console can now be locked with the following key combination:
ctrl+b :lock-session
The tmux package allows for a session lock to be implemented and configured. However, the session lock is implemented by an external command. The tmux default configuration does not contain an effective session lock.
To enable console screen locking in tmux terminal multiplexer after a period of inactivity, the lock-after-time option has to be set to a value greater than 0 and less than or equal to 900 in /etc/tmux.conf.
Locking the session after a period of inactivity limits the potential exposure if the session is left unattended.
To set a key binding for the screen locking in tmux terminal multiplexer, the session-lock command must be bound to a key. Add the following line to /etc/tmux.conf:
bind X lock-session. The console can now be locked with the following key combination:
Ctrl+b Shift+x
The tmux package allows for a session lock to be implemented and configured. However, the session lock is implemented by an external command. The tmux default configuration does not contain an effective session lock.