To prevent intruders from using an idle session, set timeouts for the ESXi Shell and vSphere Client.
ESXi Shell Timeout
- Availability Timeout
The availability timeout setting is the amount of time that can elapse before you must log in after the ESXi Shell is enabled. After the timeout period, the service is disabled and users are not allowed to log in.
- Idle Timeout
The idle timeout is the amount of time that can elapse before the user is logged out of an idle interactive sessions. Changes to the idle timeout apply the next time a user logs in to the ESXi Shell. Changes do not affect existing sessions.
vSphere Client Timeout
vSphere Client sessions end after 120 minutes by default. You can change this default in the webclient.properties file, as discussed in the vCenter Server and Host Management documentation.