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Netsweeper is a Linux based web filtering software developed by the Netsweeper corporation. It provides functions for filtering malicious and inappropriate web content, which can help with meeting compliance and regulatory requirements. The software can be installed on hardware or used in a virtual environment, both of which can be load balanced using Loadbalancer.org appliances. Implementing Loadbalancer.org appliances enables multiple the Netsweeper software to be deployed in a cluster.
This provides the following key benefits:
For load balancing Netsweeper we recommend Layer 4 Direct Routing (DR) mode, aka Direct Server Return (DSR). This is a very high-performance solution which is well suited to web filters and proxies. However, Layer 4 NAT, Layer 4 SNAT & Layer 7 SNAT can also be used. Deciding which method is best for your deployment depends on a variety of factors. Layer 4 DR mode is the fastest method but requires the ARP problem to be solved and also requires the application running on the real servers to respond to both its own IP address and the VIP. Layer 4 NAT mode requires that the default gateway on the real servers is the load balancer. Layer 4 SNAT mode requires no real server changes, but unlike the other Layer 4 methods, is non-transparent. Layer 7 SNAT mode is also non-transparent and requires no real server changes, but does not offer the raw throughput of the Layer 4 methods. Three modes of Netsweeper operation are officially supported with Loadbalancer.org appliances:
Offering incredible power & performance - at entry level pricing. The Enterprise R20 is license restricted to 5 clusters, each with 4 back-end servers. You'll probably never need to upgrade the license, but just in case you do, the transition to unrestricted is seamless, with no downtime or need to swap out your existing hardware.More Information Free Trial
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