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Tuesday, 27 August 2013

Preventing Users from Logging In _ HPUX

One of the issues for system administrators is how to keep non-superusers from logging
in to a system while system configuration or system maintenance is underway.

/etc/nologin file and the NOLOGIN variable in the /etc/default/security file.

If /etc/nologin exists and NOLOGIN=1, nonsuperusers are barred from logging in.
What they will see is a system-generated message (Only...security) followed by the contents of /etc/nologin.

1) Create or edit the file /etc/nologin. It can be empty, but users might appreciate some information on why the system is unavailable.

2) Edit the file /etc/default/security and set the NOLOGIN line to NOLOGIN=1.
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