Kerio — Control 9.4.2 ((link))

The IPS engine in 9.4.2 uses Snort-compatible rule sets. The update mechanism pulls rules nightly if a valid license is present. Performance wise, on an Atom C3558 or equivalent CPU, enabling all IPS rules reduces throughput from ~950 Mbps to ~500 Mbps. For most SMBs with 100 Mbps internet, this is irrelevant.

Traffic Policy > Bandwidth Management

If you have already upgraded to 9.4.2, you might encounter performance issues related to . If internet throughput feels low after the update, administrators often find relief by modifying GRO settings in the advanced configuration. kerio control 9.4.2