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.
We recommend that the following organizations consider upgrading to Kerio Control 9.4.2: kerio control 9.4.2
To run Kerio Control 9.4.2 effectively, the following hardware specifications are recommended: : 2 GHz multi-core processor. The IPS engine in 9
Kerio Control 9.4.2 was officially released on (Build ID: 7279). This version serves as a stable update for GFI's Kerio Control next-generation firewall, focusing on network protection and traffic management. Key Highlights & Common Tasks For most SMBs with 100 Mbps internet, this is irrelevant
If you are still running 9.4.0 or 9.4.1, upgrading to 9.4.2 is (if not mandatory) to avoid these operational headaches.