The "Triangle Route" Solutions; Figure 110 "Triangle Route" Problem; Figure 111 Ip Alias - ZyXEL Communications P-660HW-Tx v3 User Manual

Figure 110 "Triangle Route" Problem

11.8.2 The "Triangle Route" Solutions

IP alias allows you to partition your network into logical sections over the same Ethernet
interface. Your switch supports up to three logical LAN interfaces with the switch being the
gateway for each logical network. By putting your LAN and Gateway B in different subnets,
all returning network traffic must pass through the switch to your LAN. The following steps
describe such a scenario.
1 A computer on the LAN initiates a connection by sending a SYN packet to a receiving
server on the WAN.
2 The switch reroutes the packet to Gateway A, which is in Subnet 2.
3 The reply from WAN goes through the switch to the computer on the LAN in Subnet 1.

Figure 111 IP Alias

P-660HW-Tx v3 User's Guide
Chapter 11 Firewalls
171