reset failed login count / unlock aix/UNIX account

Question

As system administrator it is necessary to lock / unlock users or to reset failed login count.

let's look how we can perform lock / unlock users or to reset on UNIX/AIX

Answer 1

• Fist become root:

    su - root
    lsuser -a unsuccessful_login_count userid 
    

• reset unsuccessful login count:

    chsec -f /etc/security/lastlog -a unsuccessful_login_count=0 -s userid
    

• unlock account:

    chuser account_locked=false userid
    

• to lock an AIX account:

    chuser account_locked=true userid
    

• check if locked:

    lsuser userid
    

For Linux like redhat distros

pam_tally2 --user=test1
pam_tally2 --user=test1 --reset