Appendix A: Frequently Asked Questions - NetComm NB3100 Quick Start Manual

Appendix A: Frequently
Asked Questions
Q: What is the maximum number of IP
Addresses the NetComm Cable/DSL
Firewall Router can support?
The NetComm Cable/DSL Firewall Router
can support up to 253 IP Addresses in the
range of 192.168.1.2~192.168.1.254.
Q: Where should the NetComm Cable/
DSL Firewall Router be installed on the
network?
In a typical environment, the NetComm
Cable/DSL Firewall Router should be installed
between the ADSL/Cable modem and your
LAN. Connect the NetComm Cable/DSL
Firewall Router to the Ethernet port of your
ADSL/Cable modem, and connect your
computers to the RJ45 jack on the LAN side.
Q: Does the NetComm Cable/DSL
Firewall Router support IPX or
AppleTalk?
No. The NetComm Cable/DSL Firewall
Router was designed to provide a multiple
user LAN with shared Internet access and
supports only the TCP/IP Protocol. If your
Novell or Apple system is configured with
TCP/IP, the NetComm Cable/DSL Firewall
Router can support them.
Q: Does the NetComm Cable/DSL
Firewall Router support 100Mb Ethernet?
Yes, the NetComm Cable/DSL Firewall
Router supports both 10Mb & 100Mb
Ethernet on the LAN side, but only 10Mb on
the WAN side.
Q: What is "NAT" and what is it used for?
The Network Address Translation (NAT)
Protocol translates multiple IP Addresses on a
private LAN into a single public IP Address
that is accessible to the Internet. NAT not
only provides the basis for multiple IP
Address sharing but also provides security,
Rev.2 - YML630
Cable/DSL Firewall Router
since the multiple IP Addresses of LAN
computers are never transmitted directly to
the Internet.
Q: How can NetComm Cable/DSL
Firewall Router share single user account
to multiple users?
The NetComm Cable/DSL Firewall Router
combines the following technologies to enable
this function.
NAT (Network address translation): NAT
is a technology which can create a private
network domain behind a public IP. It is
usually used as a firewall. It can also be used
when there are not enough IP Addresses.
DHCP (Dynamic host configuration
protocol): DHCP is a protocol to assign IP
Addresses to internal computers
automatically. It can save a lot of IP Address
configuration. This protocol is supported by
Windows 95/NT, Mac OS, and many other
popular OS.
DNS (Domain name service): DNS is a
protocol which translates Domain Names to
IP addresses that an Internet host can handle.
Addressing system using Domain names, like
www.yahoo.com, is easier to use than its IP
address, 204.71.177.70.
Q: What operating systems does
NetComm Cable/DSL Firewall Router
series support?
The NetComm Cable/DSL Firewall Router
uses standard TCP/IP protocol. It can be
operated as long as you have TCP/IP protocol
installed on your operating system (For
example: Windows 9x, Windows NT,
Windows 2000, Windows XP, etc.)
Q: Can I use multiple E-mail accounts if I
use NetComm Cable/DSL Firewall
Router?
Yes, you can. Some people think having one
Internet account means that they can have
only one E-mail account. However, E-mail is
www.netcomm.com.au
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