Vyatta Network OS Documentation

Learn how to install, configure and operate the Vyatta NOS, which helps drive our virtual networking & 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