Netgear SRX5308 SRX5308 Reference Manual - Page 321
Appendix B Network Planning for Multiple WAN Ports, What to Consider Before You Begin
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Appendix B Network Planning for Multiple WAN Ports This appendix describes the factors to consider when planning a network using a firewall that has more than one WAN port. This appendix contains the following sections: • "What to Consider Before You Begin" on this page • "Overview of the Planning Process" on page B-5 • "Inbound Traffic" on page B-7 • "Virtual Private Networks" on page B-9 What to Consider Before You Begin The VPN firewall is a powerful and versatile solution for your networking needs. To make the configuration process easier and to understand all of the choices that are available to you, consider the following before you begin: 1. Plan your network. a. Determine whether you will use one or several WAN ports. For one WAN port, you might need a fully qualified domain name either for convenience or to remotely access a dynamic WAN IP address. b. If you intend to use several WAN ports, determine whether you will use them in autorollover mode for increased system reliability or load balancing mode for maximum bandwidth efficiency. See the topics in this appendix for more information. Your decision has the following implications: • Fully qualified domain name (FQDN) - For auto-rollover mode, you will need an FQDN to implement features such as exposed hosts and virtual private networks. - For load balancing mode, you might still need an FQDN either for convenience or to remotely access a dynamic WAN IP address. B-1 v1.0, April 2010