ZyWALL 2 Series User’s Guide

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)

NAT (Network Address Translation - NAT, RFC 1631) allows the translation of multiple IP addresses used within one network to different IP addresses known within another network.

Traffic Redirect

Traffic Redirect forwards WAN traffic to a backup gateway 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 another DHCP server to the clients.

Shared Internet Access

Computers connected to the LAN-side of the ZyWALL can have simultaneous access to the Internet. Inactive connections are dropped after a specified idle timeout (see Configuring WAN ISP).

Full Network Management

The embedded web configurator is an all-platform web-based utility that allows you to easily access the ZyWALL’s management settings and configure the firewall. The ZyWALL also provides the SMT (System

Getting to Know Your ZyWALL

1-5