SWG 8.1 and earlier used the McAfee Network Driver (MFEND) for Proxy HA and Transparent router deployment modes. The maximum throughput is limited to only 1 Gbit/s.

From SWG 8.2, a layer-7-based proxy named HAProxy, replaced the MFEND.

Both Proxy HA and Transparent router deployment modes now use advanced capabilities from the HAProxy module, which results in performance improvements.

With the legacy MFEND modules, the maximum throughput is limited to only 1 Gbit/s. SWG 8.2 and later impose no such cap on the maximum throughput, which allows systems to exceed the current limitation of 1 Gbps.

The performance improvements have been tested across a cluster of SWG 10.2 systems. In this test, we simulated the traffic matching up to 10 WBG-5500-D SWG systems. During the tests, we could easily scale up to 7.5 Gbps. We don't claim a bandwidth of 10 Gbps because there might be other network overheads that can consume other bandwidth. Our tests have shown that the system throughput scales linearly with the number of SWG instances used.