Juniper JUNOSE 11.0.X IP SERVICES, Руководство по настройке

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Chapter 2
Configuring NAT
This chapter describes how to configure Network Address Translation (NAT) on your
ERX router; it contains the following sections:
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Overview on page 63
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Platform Considerations on page 64
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References on page 64
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NAT Configurations on page 65
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Network and Address Terms on page 66
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Understanding Address Translation on page 67
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Address Assignment Methods on page 68
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Order of Operations on page 69
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PPTP and GRE Tunneling Through NAT on page 70
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Packet Discard Rules on page 70
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Before You Begin on page 70
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Configuring a NAT License on page 71
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Limiting Translation Entries on page 71
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Specifying Inside and Outside Interfaces on page 71
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Defining Static Address Translations on page 72
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Defining Dynamic Translations on page 74
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Clearing Dynamic Translations on page 79
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NAT Configuration Examples on page 79
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Tunnel Configuration Through NAT Examples on page 86
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GRE Flows Through NAT on page 88
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Monitoring NAT on page 88
Overview
The Internet faces the challenges of conserving IP address space while continuing
to provide scalability in routing. Network Address Translation (NAT) helps address
these challenges by allowing the conservation of registered IP addresses within private
networks and simplifying IP addressing management tasks through a form of
transparent routing .
Overview
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