A firewall user is a network user who must provide
a username and password for authentication when initiating a connection
across the firewall. JUNOS software supports the following types
of users:
Administrators. For more information, see the JUNOS Software Administration Guide
Point-to-Point Protocol (PPP) users. For more information,
see the JUNOS Software Administration Guide
Firewall users. Firewall user authentication enables administrators
to restrict and permit users (firewall users) accessing protected
resources (different zones) behind a firewall based on their source
IP address and other credentials.