Traffic Redirect - ZyXEL Communications ZyWALL 5 User Manual

ZyWALL 5 User's Guide
IP Alias
IP Alias allows you to partition a physical network into logical networks over the same
Ethernet interface. The ZyWALL supports three logical LAN and/or DMZ interfaces via its
single physical Ethernet LAN and/or DMZ interface with the ZyWALL itself as the gateway
for each network.
Central Network Management
Central Network Management (CNM) allows an enterprise or service provider network
administrator to manage your ZyWALL. The enterprise or service provider network
administrator can configure your ZyWALL, perform firmware upgrades and do
troubleshooting for you.
SNMP
SNMP (Simple Network Management Protocol) is a protocol used for exchanging
management information between network devices. SNMP is a member of the TCP/IP
protocol suite. Your ZyWALL supports SNMP agent functionality, which allows a manager
station to manage and monitor the ZyWALL through the network. The ZyWALL supports
SNMP version one (SNMPv1).
Network Address Translation (NAT)
Network Address Translation (NAT) allows the translation of an Internet protocol address
used within one network (for example a private IP address used in a local network) to a
different IP address known within another network (for example a public IP address used on
the Internet).

Traffic Redirect

Traffic Redirect forwards WAN traffic to a backup gateway on the LAN when the ZyWALL
cannot connect to the Internet, thus acting as an auxiliary backup when your regular WAN
connection fails.
Port Forwarding
Use this feature to forward incoming service requests to a server on your local network. You
may enter a single port number or a range of port numbers to be forwarded, and the local IP
address of the desired server.
DHCP (Dynamic Host Configuration Protocol)
DHCP (Dynamic Host Configuration Protocol) allows the individual client computers to
obtain the TCP/IP configuration at start-up from a centralized DHCP server. The ZyWALL
has built-in DHCP server capability, enabled by default, which means it can assign IP
addresses, an IP default gateway and DNS servers to all systems that support the DHCP client.
The ZyWALL can also act as a surrogate DHCP server (DHCP Relay) where it relays IP
address assignment from the actual real DHCP server to the clients.
50 Chapter 1 Getting to Know Your ZyWALL