230 Appendix B Triangle RouteNN47923-5011 A computer on the LAN initiates a connection by sending out a SYN packetto a receiving server on the WAN.2 The Business Secure Router reroutes the SYN packet through Gateway B onthe LAN to the WAN.3 The reply from the WAN goes directly to the computer on the LAN withoutgoing through the Business Secure Router.As a result, the Business Secure Router resets the connection, as the connection isnot acknowledged.Figure 130 Triangle Route ProblemThe Triangle Route SolutionsIP aliasingUsing IP alias, you can partition your network into logical sections over the sameEthernet interface. Your Business Secure Router supports up to three logical LANinterfaces with the Business Secure Router being the gateway for each logicalnetwork. By putting your LAN and Gateway B in different subnets, all returningnetwork traffic must pass through the Business Secure Router to your LAN. Thefollowing steps describe such a scenario.1 A computer on the LAN initiates a connection by sending a SYN packet to areceiving server on the WAN.Business Secure Router
