The concept of a load balancer has changed many times over the years. From simple black box appliances that distributed load across a number of servers, they have now evolved into Application Delivery Controllers (ADC), complex application proxies that can perform a myriad of layer 7 activities. But that isn’t all. You now have ADCs that can incorporate Web Application Firewalls (WAF), IPSec and SSL VPN termination, phishing detection. They can be deployed as traditional appliances or as virtual machines. They can even perform global and local load balancing on the same device. The list of superlatives associated with these new-age ADCs really does go on and on, but the point being made here is that, as with any form of technology being deployed, it must form part of the end-to-end architecture.

Consolidation is a key thing, but is it always the correct thing to do? Should an ADC remove the need for typical VPN gateways or traditional WAFs? The answer is simple: it depends. The infrastructure requirements drive these conversations, and here at TCC, we want to help you come to these conclusions.

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