User`s manual

RX3042H User's Manual Getting to Know RX3042H
3
Chapter 2 Getting to Know RX3042H
2.1 Parts List
In addition to this document, RX3042H should come with the following:
• The system unit
• AC adapter
• Ethernet cable (“straight-through” type)
2.2 Hardware Features
LAN
• 4-port Fast Ethernet switch
• Auto speed negotiation
WAN
• Dual 10/100M Ethernet ports
• Auto MDI/MDIX
2.3 Software Features
2.3.1 NAT Features
RX3042H provides NAT to share a single high-speed Internet
connection and to save the cost of multiple connections required
for the hosts on the LAN segments connected to it. This feature
conceals network address and prevents them from becoming
public. It maps unregistered IP address of hosts connected to the
LAN with valid ones for Internet access. RX3042H also provides
reverse NAT capability, which enables users to host various
services such as e-mail servers, web servers, etc. The NAT rules
drive the translation mechanism. The following types of NAT are
supported by RX3042H.
• NAPT (Network Address and Port Translation)– Also called IP
Masqueradi ng or ENAT (Enhanced NAT). Maps many internal
hosts to only one globally valid IP address. The mapping usually