Learning OpenStack Networking (Neutron) - Second Edition

Demonstrating traffic flow through a firewall

To see how firewall policies are applied to a Neutron router, take note of the following firewall rule, which allows HTTP traffic from any source to any destination on TCP port 80:

Figure 11.10

The firewall rule was applied to the policy named MyFirewallPolicy as shown in the following screenshot:

Figure 11.11

As the final step, the policy is associated with a firewall, MyFirewall, as shown in the following screenshot:

Figure 11.12

Examining the chains

Once a firewall is created, the rules within the firewall ...