SSH key based login bypasses password policies

view story

http://unix.stackexchange.com – I noticed that logins via an SSH key bypass the LDAP password policies (password ageing, password warning, and password lockout due to failed attempts, etc). Is there any way to force key-based ssh logins to respect the password policies? My clients are old (RHEL 4), so installing sssd is not an option. (HowTos)