inactivity default to 30 days

Hi All,

On red hat ent 4. How do I make the inactivity a default to 30 days? What config file I need to modify so that I will not modify /etc/shadow?

Thanks for any comment you may add.

Your question is unclear. Are you talking about locking a users account after X number of days of inactivity? If so, there is no global way of doing it as far as I know without editing /etc/shadow.