Network Address Translation (Nat); Overview - Extreme Networks 200 Series Installation And User Manual

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
Inside Outside
NAT
switch
Outgoing Outgoing
Private Internet
Network
Incoming Incoming
EW_078
Summit 200 Series Switch Installation and User Guide 135