D-Link DFL-2500 User Guide - Page 285
Enabling SLB
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266 Chapter 24. Server Load Balancing (SLB) 24.2.4 Packets Flow by SAT In D-Link firewalls, load-balancing enabled SAT rule is used to translate packets exchanged between a client and real servers. When a new connection is being opened, the SAT rule is triggered; it translates the public server farm IP address to a real server address. Necessary modification to the packets is performed by the underlying system determined by NAT or Allow rule. 24.3 Scenario: Enabling SLB The main configuration steps necessary for enabling SLB function in D-Link firewalls are outlined as follows: • Specifying a Server Farm - Define a group of servers as a server farm by selecting the objects with correct IP. • Specifying the load-balancing enabled SAT rule - Configure a SAT rule with filtering fields for the firewall to match the traffic flow and trigger the SLB . • Specifying Distribution Mode & Algorithm - Provide the distribution policies the firewall should use. Example: SLB Configuration Figure 24.2: A SLB Scenario D-Link Firewalls User's Guide