related to protocol renegotiation on VPN ports and changing default IKE protocol versions from IKEv1 to a more modern IKE standard. Implementation & Management Administrators manage these versions through the GFI Kerio Control administration interface
If you are considering 9.4.2, note that newer versions have since introduced major enhancements: Kerio Control 9.4.2 Release Notes - GFI kerio control 9.4.2
You can set speed limits for specific services or IP ranges. related to protocol renegotiation on VPN ports and
Believe it or not, thousands of organizations still run Kerio Control 9.4.2 in production. Here are typical scenarios: kerio control 9.4.2