Firewall; Nat - Maxon DataMax MA100-1010 User Manual

Firewall

NAT

NAT (Network Address Translation or Network Address Translator) is the
translation of an Internet Protocol address (IP address) used within one
network to a different IP address known within another network. One
network is designated as the inside network and the other, as the outside
network. Typically, a company maps its local inside network addresses to
one or more global outside IP addresses and un-maps the global IP
addresses on incoming packets back into local IP addresses. This helps
ensure security since each outgoing or incoming request must go
through a translation process that also offers the opportunity to qualify or
authenticate the request or match it to a previous request. NAT also
conserves on the number of global IP addresses that a company needs
and it lets the company use a single IP address in its communication with
the world.
Adding a NAT item
Service Name:
Service Type:
Outside Starting Port:
Inside Start Port:
Port Numbers:
Server IP Address:
Example:
The NAT entry name
The protocol used TCP or UDP or BOTH
Starting port number of the WAN incoming traffic
Inside LAN start port number
Number of ports to be forwarded
LAN IP address that will be used for NAT
functionality.
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