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Network address translation (nat), Overview, Chapter 10 – Extreme Networks 200 Series User Manual

Page 137

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Summit 200 Series Switch Installation and User Guide

135

10

Network Address Translation (NAT)

This chapter covers the following topics:

Overview on page 135

Internet IP Addressing on page 136

Configuring VLANs for NAT on page 136

Configuring NAT on page 138

Configuring NAT Rules on page 138

Creating NAT Rules on page 139

Displaying NAT Settings on page 141

Disabling NAT on page 142

Overview

NAT is a feature that allows one set of IP addresses, typically private IP addresses, to be converted to
another set of IP addresses, typically public Internet IP addresses. This conversion is done transparently
by having a NAT device rewrite the source IP address and Layer 4 port of the packets.

Figure 24: NAT Overview

EW_078

NAT

switch

Outgoing

Incoming

Outgoing

Incoming

Internet

Inside

Outside

Private

Network