Ppp; Ppp > Ppp Configuration - Multitech MultiModem rCell User Manual

PPP

PPP > PPP Configuration
NAT Configuration
NAT
Note: For routing to take effect, save the configuration after enabling it. It won't be effective on the fly at
runtime.
Multi-Tech Systems, Inc. MultiModem rCell User Guide
Enable/disable NAT (Network Address Translation). The default is Enable.
If NAT is enabled:

Your LAN can use one set of IP addresses for internal traffic and a second set of
addresses for external traffic. In other words, the router with NAT does the
simple IP routing between the LAN interface and the WAN interface. NAT hides
the LAN address behind a single IP address on the wireless side.

Your internal addresses are shielded from the public Internet.
If NAT is disabled:

The router functions without performing any address translation on the packets
passing through it.

Masquerading of packets originating from the LAN is disabled.

Address translation of packets arriving from the WAN is also disabled.

Any DNAT Configuration previously setup in the DNAT Configuration screen is
disabled. This prevents the user from adding any DNAT rules, which if allowed
would defeat the purpose of enabling Routing.
Chapter 3 – Using the Web Management Software
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