Figure 27: Dual-Untrust Port Mode Bindings; Combined Port Mode - Juniper NETWORK AND SECURITY MANAGER 2010.3 - ADMINISTRATION GUIDE REV1 Administration Manual

Network and Security Manager Administration Guide
106
Binds the Ethernet ports 1 and 2 to the ethernet1 interface, which is bound to the Work
security zone.
Binds the Ethernet ports 3 and 4 to the ethernet2 interface, which is bound to the Home
security zone.
Binds the Untrusted Ethernet port to the ethernet3 interface, which is bound to the
Untrust security zone.
Binds the Modem port to the serial interface, which you can bind as a backup interface
to the Untrust security zone.
Dual-Untrust Port Mode
Dual Untrust mode binds two interfaces—a primary and a backup—to the Untrust security
zone. The primary interface is used to pass traffic to and from the Untrust zone, while
the backup interface is used only when there is a failure on the primary interface.
See Figure 27 on page 106 for port, interface, and zone bindings.

Figure 27: Dual-Untrust Port Mode Bindings

This mode provides the following bindings:
Binds the Untrusted Ethernet port to the ethernet3 interface, which is bound to the
Untrust security zone.
Binds Ethernet port 4 to the ethernet2 interface, which is bound as a backup interface
to the Untrust security zone (the ethernet3 interface is the primary interface to the
Untrust security zone).
Binds the Ethernet ports 1, 2, and 3 to the ethernet1 interface, which is bound to the
Trust security zone.
NOTE: The serial interface is not available in Dual Untrust port mode.

Combined Port Mode

Combined mode enables both primary and backup interfaces to the Internet and the
segregation of users and resources in Work and Home zones.
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