Linksys E2000 Configuration Guide

Revision 1.1 Page 23
®®
N2KView
®
must then be set up to request a connection to the WAN IP Address of the router
and the new port number.
A.5 Static and Dynamic IP Addressing
If you wish to use N2KView
®
to view data from an N2KServer
®
on a WAN through an Internet
connection, please read this section. If your N2KServer
®
and N2KView
®
computers are on the
same LAN, you may skip this section.
If you request a Static IP Address from your ISP when you set up your Internet connection, the
WAN IP address will always be the same. If you didn’t make this request, your ISP will assign
you a Dynamic IP Address, which may actually change from time to time. In this way, the ISP
only needs to have enough addresses to cover its customers who are connected to the
Internet at any given time. If you stop or lose your Internet connection, your Dynamic IP
address will be released and may be reassigned to someone else.
If you wish to connect to an N2KServer
®
from outside your vessel’s LAN via an Internet
connection, you have two choices. First, you can request a static IP address from the ISP for
your vessel; secondly, you may register your N2KServer
®
’s IP address with a “dynamic DNS
service”, such as the ones offered freely by www.dyndns.org, among others. Please visit their
websites for more information on how dynamic DNS services operate.
A.6 Software Firewall Configuration
If you wish to run N2KView
®
and N2KServer
®
on two separate computers and are running a
software firewall product other than Windows Firewall, please read this section. Otherwise,
you may skip this section.
A firewall is designed to protect your computer from unfettered access from the Internet.
There are two kinds of firewalls: software and hardware. A software firewall is a component
such as Windows Firewall or Norton Internet Security. A major function of these programs is to
allow your computer to initiate connections out onto the Internet, but to block your computer
from receiving incoming connections from the Internet. If you wish to be able to view your
vessel’s data from another computer, your N2KServer
®
computer’s software firewall must be
configured to allow incoming connections from N2KView
®
stations. The N2KServer
®
makes
these adjustments to the Windows Firewall software when it is installed. If you are running
firewall software from another vendor, you may have to configure your firewall software to
allow this incoming TCP protocol connection on port 6544.
A.7 Data Security and Encryption
Making your vessel’s data available over local networks or the internet presents multiple
security concerns. First, it is desirable to keep anyone from viewing your vessel’s data without
authorization. Second, and more important, it is imperative that no unauthorized persons be
able to place data onto your vessel’s NMEA 2000 network.

Linksys E2000 Specifications

General

Ethernet LAN	Yes
Networking standards	IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.3, IEEE 802.3ab, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Input current	1 A
Input voltage	12 V
Dimensions (WxDxH)	202 x 34 x 160 mm
WLAN data transfer rates supported	300 Mbit/s
DHCP client	-
Antennas quantity	3
Antenna gain level (max)	2.2 dBi
Web-based management	No
Security algorithms	WEP, WPA, WPA2
Certification	FCC, CE, IC-03, Wi-Fi
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 85 %
Cables included	LAN (RJ-45)

Weight and Dimensions

Weight	300 g