Mastering Linux Security and Hardening - Second Edition

Hands-on lab for setting account and password expiry data

In this lab, you'll create a couple of new user accounts, set expiration data, and view the results. You can do this lab on either the CentOS or the Ubuntu virtual machine. The only difference will be with the useradd commands:

1. Create a user account for Samson with the expiration date of June 30, 2023, and view the results for CentOS, run this command:

sudo useradd -e 2023-06-30 samsonsudo chage -l samson

For Ubuntu, run this command:

sudo useradd -m -d /home/samson -s /bin/bash -e 2023-06-30sudo chage -l samson

2. Use usermod to change Samson's account expiration date to July 31, 2023:

sudo usermod -e 2023-07-31sudo chage -l samson

3. Assign a password to Samson's account, then force ...