Introduction - Black Box LRB500A User Manual

NET ACCESS BROADBAND ROUTER W/4-PORT SWITCH USERS' MANUAL

2. Introduction

The Net Access Broadband Router w/4-Port Switch connects a DSL or cable
modem to an Ethernet LAN to provide high-speed broadband access to the
Internet for multiple users. The Router features a built-in 4-port 10/100 switch,
one asynchronous port for backup Internet access or dial-in remote access, and
firewall services. The Router is ideal for any business looking for cost-effective
broadband access to the Internet for every use on the LAN or for the home user
looking to share their DSL cable modem.
The Router connects up to 253 internal IP addresses to the Internet with
broadband speed. It can be configured as a DHCP server to handle requests for
Internet services and route to and from the ISP. Up to 253 internal IP addresses
are connected to the Internet with only one IP account. The WAN Ethernet port
has a bandwidth of 10 Mbps, which is 179 times faster than a 56-kbps modem and
can support DSL or cable speeds of up to 2.5 Mbps.
A built-in 10/100-Mbps Switch is included with the router. The integrated 4-port
10/100 switch eliminates the need for an additional hub or switch to connect users
not on a LAN. It ensures high-speed transmission and can serve as a completely
dedicated full duplex backbone.
The Router gives you network security. It uses the NAT protocol to provide
security from hackers attempting to access the office LAN without the extra cost of
a firewall. It implements firewall and gateway security for LAN-based resources.
The Router also supports Internet access restriction by IP address, client protocols,
or a list of forbidden sites.
The Router features Dial Backup or Dial-in RAS Port. It also provides an
additional asynchronous port that, when connected to a dial-up modem or ISDN
terminal adapter, serves as a backup resource for Internet access if your DSL or
cable service goes down. It can also serve as dial-in remote access for your
telecommuters or mobile users.
Plus, it offers Virtual Server Support. In addition to providing shared Internet
access, the Router can support Web, FTP, or other Internet servers. Once
configured, the Router accepts only unsolicited IP packets addressed to the Web or
FTP server.
LAN segmentation is included with the Router. For added LAN security, you can
use the Router to segment the LAN by connecting the corporate servers to one
Router Ethernet port and the Internet servers to the other Ethernet port. This
configuration puts the corporate servers behind a firewall and the Internet servers
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