PAM authentication
n“Plugable-authentication Modules”
nAvailable for numerous UNIX platforms (Solaris, Linux, HP etc.) – pam.conf
nCan store most /etc data on LDAP (passwd/shadow, group, fstab, mail alias, protocol, rpc, service, host etc.)
nNo duplication of accounts and group data across machines (synchronisation issues)
nAlready used in authenticated SMTP service.