Cisco RV042 Administration Guide - Page 174

Configuring a Gateway-to-Gateway VPN Tunnel Between RV0xx Series Routers Other Design Considerations D one boat, so to speak, by obtaining a Fully Qualified Domain Name (FQDN) and registering at least one site with a Dynamic DNS service. This service associate tracks your dynamic IP address to ensure that your router is reachable even when the address changes. As illustrated below, Dynamic DNS service ensures that traffic for the FQDN, MyBusiness.DynDNS.org, is routed to the dynamic IP address. Figure 4 Gateway To Gateway Tunnel with a Dynamic IP Address Site A Outside 209.165.200.226 RV016 router Inside 192.168.1.1 Internet Outside MyBusiness.DynDNS.org (dynamic IP address) Site B RV042 router Inside 192.168.2.1 199896 Printer Personal computers Personal computers Printer Free Dynamic DNS accounts are available through many providers. Examples are listed below. - http://dyn.com/dyndns - http://update.ods.org - http://www.dhs.org - http://www.3322.org - http://www.no-ip.com LAN Setup The LAN setup pertains to the network that your router connects to inside your office. It should not be necessary to make any changes in your LAN setup, unless both sites have the same addressing. The two ends of the tunnel cannot be on the same subnet. For example, if the LAN IP address of the RV0xx router at Site A is 192.168.15.1, Site B must use a different subnet, such as 192.168.75.1. Cisco Small Business RV0xx Series Routers Administration Guide 174