PAM authentication
n “Plugable-authentication Modules”
n Available for numerous UNIX platforms
(Solaris, Linux, HP etc.) – pam.conf
n Can store most /etc data on LDAP
(passwd/shadow, group, fstab, mail alias,
protocol, rpc, service, host etc.)
n No duplication of accounts and group data
across machines (synchronisation issues)
n Already used in authenticated SMTP service.