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Vyatta documentation

Learn how to install, configure, and operate the Vyatta Network Operating System (Vyatta NOS) and Orchestrator, which help drive our virtual networking and physical platforms portfolio.

Traffic flow through firewall, NAT, and routing

The following figure shows how traffic flows through the firewall, NAT, and routing services within the vRouter. Notice the order of firewall instances, destination Network Address Translation (DNAT), routing decisions, and source Network Address Translation (SNAT).

Figure 1. Traffic flow through firewall, NAT, and routing components