How to expire passwords for Kerberos user accounts

[Ramaiah, Vanna G.]

Got it. For the new users, do I have to run  "kadmin: modprinc -expire "180 days" newprinc" or will the pwexpire field be set when the account is created?


-----Original Message-----
From: Greg Hudson [mailto:ghudson at mit.edu] 
Sent: Monday, March 28, 2016 5:12 PM
To: Ramaiah, Vanna G.; kerberos at mit.edu
Subject: Re: How to expire passwords for Kerberos user accounts



On 03/28/2016 05:08 PM, Ramaiah, Vanna G. wrote:
> For existing accounts, I can run  "kadmin: modprinc -policy userpolicy oldprinc"
> Why do I have to run this command "kadmin: modprinc -expire "180 days" oldprinc", if the policy is already applied?

The KDC only pays attention to the pwexpire field on the principal entries; it doesn't look at the policy.  The policy is applied by kadmind (or kadmin.local) when passwords are changed, and sets the pwexpire field on the principals.