ZyWALL/USG Series User’s Guide
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CHAPTER 10
Interfaces
10.1 Interface Overview
Use the Interface screens to configure the ZyWALL/USG’s interfaces. You can also create
interfaces on top of other interfaces.
• Ports are the physical ports to which you connect cables.
• Interfaces are used within the system operationally. You use them in configuring various
features. An interface also describes a network that is directly connected to the ZyWALL/USG.
For example, You connect the LAN network to the LAN interface.
• Zones are groups of interfaces used to ease security policy configuration.
10.1.1 What You Can Do in this Chapter
•Use the Port Role screen (Section 10.2 on page 266) to create port groups and to assign
physical ports and port groups to Ethernet interfaces.
•Use the Ethernet screens (Section 10.3 on page 267) to configure the Ethernet interfaces.
Ethernet interfaces are the foundation for defining other interfaces and network policies. RIP and
OSPF are also configured in these interfaces.
•Use the Virtual Interface screen (Section 10.3.2 on page 285) to create virtual interfaces on
top of Ethernet interfaces to tell the ZyWALL/USG where to route packets. You can create
virtual Ethernet interfaces, virtual VLAN interfaces, and virtual bridge interfaces.
•Use the PPP screens (Section 10.4 on page 289) for PPPoE, PPTP or L2TP Internet connections.
•Use the Cellular screens (Section 10.5 on page 296) to configure settings for interfaces for
Internet connections through an installed mobile broadband card.
•Use the Tunnel screens (Section 10.6 on page 305) to configure tunnel interfaces to be used in
Generic Routing Encapsulation (GRE), IPv6 in IPv4, and 6to4 tunnels.
•Use the VLAN screens (Section 10.7 on page 312) to divide the physical network into multiple
logical networks. VLAN interfaces receive and send tagged frames. The ZyWALL/USG
automatically adds or removes the tags as needed. Each VLAN can only be associated with one
Ethernet interface.
•Use the Bridge screens (Section 10.8 on page 324) to combine two or more network segments
into a single network.
•Use the LAG screens (Section 10.9 on page 336) to combine multiple physical Ethernet
interfaces into a single logical interface.
•Use the VTI screens (Section 10.10 on page 343) to encrypt or decrypt IPv4 traffic from or to the
interface according to the IP routing table.
•Use the Trunk screens (Section 10.11 on page 346) to configure load balancing.
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