Nortel Contivity 221 User Manual page 41

Traffic Redirect
Traffic Redirect forwards WAN traffic to a backup gateway when the Contivity
221 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 Contivity 221 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 Contivity 221 can also act as a
surrogate DHCP server (DHCP Relay) where it relays IP address assignment
from another DHCP server to the clients.
Full Network Management
The embedded WebGUI is an all-platform web-based utility that allows you to
easily access the Contivity 221's management settings and configure the firewall.
The Contivity 221 also provides the SMT (System Management Terminal)
interface. The SMT is a menu-driven interface that you can access from a terminal
emulator through the console port or over a telnet connection.
RoadRunner Support
In addition to standard cable modem services, the Contivity 221 supports Time
Warner's RoadRunner Service.
Logging and Tracing
♦
Built-in message logging and packet tracing.
♦
Unix syslog facility support.
♦
Firewall logs.
♦
Content filtering logs.
Getting to Know Your Contivity 221 1-5
Contivity 221 VPN Switch User's Guide