Atlantis Land 111U - Manual (Page 75)

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Assigned Numbers Authority), and these are referred to as “well-known ports”. Servers
follow the well-known port assignments so clients can locate them.
If you wish to run a server on your network that can be accessed from the WAN (i.e.
from other machines on the Internet that are outside your local network), or any
application that can accept incoming connections (e.g. Peer-to-peer/P2P software such
as instant messaging applications and P2P file-sharing applications) and are using NAT
(Network Address Translation), then you will usually need to configure your router to
forward these incoming connection attempts using specific ports to the PC on your
network running the application. You will also need to use port forwarding if you want
to host an online game server.
The reason for this is that when using NAT, your publicly accessible IP address will be
used by and point to your router, which then needs to deliver all traffic to the private
IP addresses used by your PCs. Please see the WAN configuration section of this
manual for more information on NAT.
The device can be configured as a virtual server so that remote users accessing
services such as Web or FTP services via the public (WAN) IP address can be
automatically redirected to local servers in the LAN network. Depending on the
requested service (TCP/UDP port number), the device redirects the external service
request to the appropriate server within the LAN network.
Field Meaning
Rule Index Choose the rule number
Start Port Number Enter a port number in this field
End Port Number Enter a port number in this field
Local IP Address Enter your server IP address in this field
10.4 IP Address Mapping
Field Meaning
Rule Index Choose the rule number
Rule Type • One-to-one: This is the mode maps one
local IP address to one global IP address.
Note that port numbers do not change for
the One-to-one NAT mapping type
• Many-to-One: This is the mode maps