Rate limiting
With the rate limiting feature in Citrix NetScaler, we can define a maximum load for load balancing virtual servers or configured backend servers. With this feature, we can configure so as to let Citrix NetScaler monitor the rate of traffic. Based on the configured rate limiting, Citrix NetScaler can block access for example. This monitoring feature is real-time. The rate limiting feature is especially useful when the network is under attack. So, with rate limiting, it's possible to prevent Distributed Denial-of-Service (DDoS) attacks. By using rate limiting, we can improve the reliability of the network and the resources that are presented by Citrix NetScaler.
Monitoring and controlling of the rate of traffic can be done based on:
Virtual servers
URLs
Domains
Combinations of URLs and domains
User-defined expressions
With rate limiting, it's possible to throttle the traffic rate when it's too high. It's also possible to redirect traffic to another load balancing virtual server if...
