Kerio Control | 9.4.2

If your hardware supports it, run 9.4.2 on a dedicated SSD with daily configuration backups. Monitor security bulletins from GFI regarding definition updates. Plan a migration path to 9.8.x or 10.x by 2027 at the latest. But for now, enjoy the stability of one of the finest UTM releases ever crafted.

: A known behavior in this branch involves authentication gaps; if a client authenticates via IPv6 (where the DNS is also IPv6), they may appear in "Active Connections" but fail to fully authenticate if the system is looking for an IPv4 address. kerio control 9.4.2

Kerio Control excels at granular web filtering. If your hardware supports it, run 9

Content Filter > Web Filter