Interfaces; Interface Overview; What You Can Do In This Chapter; Chapter 9 Interfaces - ZyXEL Communications ZyWall USG20-VPN User Manual

9.1 Interface Overview

Use the Interface screens to configure the 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 USG. For
example, You connect the LAN network to the LAN interface.
• Zones are groups of interfaces used to ease security policy configuration.

9.1.1 What You Can Do in this Chapter

• Use the Port Role screen
ports and port groups to Ethernet interfaces.
• Use the Ethernet screens
Ethernet interfaces are the foundation for defining other interfaces and network policies. RIP and
OSPF are also configured in these interfaces.
• Use the PPP screens
• Use the Cellular screens
Internet connections through an installed mobile broadband card.
• Use the Tunnel screens
Generic Routing Encapsulation (GRE), IPv6 in IPv4, and 6to4 tunnels.
• Use the VLAN screens
logical networks. VLAN interfaces receive and send tagged frames. The USG automatically adds
or removes the tags as needed. Each VLAN can only be associated with one Ethernet interface.
• Use the Bridge screens
into a single network.
• Use the Auxiliary screens
use an external modem.
• Use the Virtual Interface screen
of Ethernet interfaces to tell the USG where to route packets. You can create virtual Ethernet
interfaces, virtual VLAN interfaces, and virtual bridge interfaces.
• Use the Trunk screens
C
(Section 9.2 on page
(Section 9.3 on page
(Section 9.4 on page 167) for PPPoE or PPTP Internet connections.
(Section 9.5 on page
(Section 9.6 on page 183) to configure tunnel interfaces to be used in
(Section 9.7 on page 189) to divide the physical network into multiple
(Section 9.8 on page 202) to combine two or more network segments
(Section 9.9 on page
(Section 9.9.1 on page
(Section 9.11 on page 219) to configure load balancing.
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Interfaces

146) to create port groups and to assign physical
147) to configure the Ethernet interfaces.
174) to configure settings for interfaces for
214) to configure the USG's auxiliary interface to
214) to create virtual interfaces on top
9