Released in mid-to-late 2019, Kerio Control 9.4.2 was not a major feature release but rather a to the 9.4.x branch. The 9.4 series introduced significant changes from version 9.3, including:
Despite being a “legacy” version, Kerio Control 9.4.2 still enjoys community support:
To prevent non-essential traffic from saturating critical business connections, Kerio Control uses advanced traffic shaping tools: kerio control 9.4.2
If an immediate full upgrade is not feasible, at minimum ensure that:
: For sub-500 Mbps connections, 9.4.2 is excellent. For gigabit connections, you should disable the gateway antivirus or move to a newer platform. Released in mid-to-late 2019, Kerio Control 9
Unlike the 9.3.x branch, 9.4 introduced a revamped SSL inspection engine and better multi-WAN policy routing. Version 9.4.2 refined these features, patching critical memory leaks found in 9.4.0 and 9.4.1. It is widely considered the .
Are you planning to from an older version, or are you troubleshooting a specific performance issue on 9.4.2? Kerio Control 9.4 Release Notes Unlike the 9
Navigate to .
One of the most used features is the , powered by a third-party categorization database (updatable via license). With 9.4.2, the HTTPS inspection (Man-in-the-Middle) uses a more robust certificate cache, reducing browser warnings. However, note that with modern QUIC protocol (HTTP/3), some inspection is bypassed—a known limitation across all UTM products of this era.
Kerio Control excels at granular web filtering.
Kerio Control 10 (now rebranded under GFI) introduced a complete UI overhaul, better cloud management, but . Migration from 9.4.2 is one-way (configuration converter tool). Be aware that licensing model changed to subscription-only.