Nat (Network Address Translation); Pat (Port Address Translation) - Linksys E2000 Configuration Manual

Linksys® E2000 Wireless-N Router Configuration Guide
typically found as part of a router. The router can be configured to reserve a specific address
for the computer and then assign that same address each time at startup. If the router chooses
a different address each time, then the computer may be difficult to find on the network. This is
not a problem for a client such as N2KView
must be at a known address.
A.3 NAT (Network Address Translation)
If you wish to use N2KView
connection, please read this section. If your N2KServer
same LAN, you may skip this section.
In the early days of the Internet, each computer connected to the Internet had its own IP
address. With the explosive growth of the Internet, the number of distinct IP addresses is
starting to run out. It is no longer practical for an Internet Service Provider (ISP) to provide its
customers with individual IP addresses for each component the customer wishes to connect to
the Internet. Rather, the ISP normally assigns each customer a single IP address, and a
router implementing Network Address Translation (NAT) is connected to the Internet
connection (sometimes referred to as the Wide Area Network, or WAN, connection) on one
side, and to the Local Area Network, or LAN, on the other side. Each computer on the LAN
side of the connection will be assigned its own IP address, typically in the ranges 192.168.x.x,
10.x.x.x, and 172.16.x.x through 172.31.x.x, where x can be any number in the range 0-255.
The WAN connection will be assigned a single IP address by the ISP.
Generally, network address translation is performed by a router that is connected to the
Internet via a Cable or DSL connection on the WAN side, and to the local area network (LAN)
via Ethernet or Wi-Fi connections. In order to access an N2KServer
network from an N2KView
incoming connections on port 6544 and to forward these connections to the IP address of the
®
N2KServer computer. Consult the documentation that came with your router for details.
A.4 PAT (Port Address Translation)
If you wish to use N2KView
connection and your Internet Service Provider does not allow communication on port 6544,
please read this section. If your N2KServer
or your ISP allows communication over port 6544, you may skip this section.
®
N2KServer requires a connection to be made on port 6544. Routers that support Port
Address Translation can be set up to accept incoming connections on a different port and to
forward these connections to port 6544 on the IP address of the N2KServer
change in the port address is known as the ability to do Port Address Translation as well as
Network Address Translation. Not all routers have this ability; please consult the
documentation that came with your router for details.
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®
, but servers such as N2KServer
®
to view data from an N2KServer
®
outside of the LAN. You must configure the router to allow
®
to view data from an N2KServer
®
and N2KView
®
on a WAN through an Internet
® ®
and N2KView computers are on the
®
on the local area
®
on a WAN through an Internet
®
computers are on the same LAN,
®
or the IPG100
®
computer. This
Revision 1.1