Kerio Control 9.4.2 [new] Jun 2026

: Fixed a bug preventing the FreeRADIUS server from starting and addressed issues with Google Remote Desktop not being blocked by content filtering rules. Deep-Dive: Technical Architecture & Limitations

If you are installing version 9.4.2 fresh or migrating from an older version, here is the starting point. kerio control 9.4.2

| Component | Minimum | Recommended (50 users) | | :--- | :--- | :--- | | CPU | 2 cores @ 1.5 GHz | 4 cores @ 2.0 GHz | | RAM | 2 GB | 4 GB | | Storage | 30 GB HDD | 60 GB SSD (for logs) | | NICs | 2 x 1 GbE | 2 x 1 GbE (Intel PRO/1000) | : Fixed a bug preventing the FreeRADIUS server

: Renewed built-in Let's Encrypt certificates that had expired in previous builds. This is the "firewall" heart of the system

This is the "firewall" heart of the system. In Kerio Control, rules are processed from top to bottom.

This version addressed several long-standing bugs and performance issues reported by users: VPN Performance : Improved stability for IPsec SNAT (Source Network Address Translation). Network Throughput : Resolved issues where macOS upload speeds