Network Address Translation

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Network Address Translation (NAT) is a method by which IP addresses in a packet are mapped from one group to another and, optionally, port numbers in the packet are translated into different port numbers.

NAT is described in RFC 1631 to solve IP (version 4) address depletion problems. Since then, NAT has been found to be a useful tool for firewalls, traffic redirect, load sharing, network migrations, and so on.

This section includes:

Understanding NAT
NAT Configuration on Different Devices
Destination IP Address Translation Overview
Understanding Static NAT on J-series Services Routers
Configuring Static NAT
Understanding Static NAT on SRX-series Services Gateways
Example: Configuring Static NAT on SRX-series Services Gateways
Understanding NAT-Dst Policy-Based NAT on J-series Services Routers
Example: Configuring Destination NAT on J-series Services Routers
Understanding Rule-Based Destination NAT on SRX-series Services Gateways
Example: Configuring Destination NAT on SRX-series Services Gateways
Understanding NAT-Dst Allow-Incoming Table
Example: Configuring NAT-Dst Allow-Incoming Table
Source IP Address Translation Overview
Understanding NAT Interface Source Pools
Understanding NAT Source Pools with PAT
Understanding NAT Source Pools Without PAT
Understanding NAT Static Source Pools
Understanding NAT Allow-Incoming Source Pools
Understanding NAT Source Pool Sets
Example: Configuring Source NAT on J-series Services Routers
Example: Configuring Source NAT on SRX-series Services Gateways
Verifying Static NAT Summary
Example: Configuring a Persistent Address and Pool Sets
Configuring Proxy ARP on SRX-series Services Gateways
Verifying NAT Configuration on SRX–series Services Gateways
Configuring Source NAT—Quick Configuration
Configuring Destination NAT—Quick Configuration
Configuring Interface NAT—Quick Configuration
Configuring Firewall/NAT Flow—Quick Configuration
Configuring Stateful Firewall or NAT Screen—Quick Configuration

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