After installing the operating system on each node for the architecture that you choose to deploy, you must configure the network interfaces. We recommend that you disable any automated network management tools and manually edit the appropriate configuration files for your distribution. For more information on how to configure networking on your distribution, see the documentation. documentation. documentation. SLES 11 or openSUSE documentation. Use the YaST network module: # yast2 network For more information, see the SLES or the openSUSE documentation. RHEL and CentOS enable a restrictive firewall by default. During the installation process, certain steps will fail unless you alter or disable the firewall. For more information about securing your environment, refer to the OpenStack Security Guide. openSUSE and SLES enable a restrictive firewall by default. During the installation process, certain steps will fail unless you alter or disable the firewall. For more information about securing your environment, refer to the OpenStack Security Guide. Your distribution does not enable a restrictive firewall by default. For more information about securing your environment, refer to the OpenStack Security Guide. Proceed to network configuration for the example OpenStack Networking (neutron) or legacy networking (nova-network) architecture.