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Slow Internet connection, degraded responsiveness, crashes

  • Slow Internet Connection with Activated Kerio WebFilter in Kerio Control

    Overview You experience slow internet connections with Kerio WebFilter activated. Some pages load very slowly and some pages do not load at all. The cause of this issue is how some ISPs handle request...

  • Troubleshooting Connection Speed Issues via iPerf3

    Overview iPerf3 is used as a primary tool to troubleshoot internet connection speed issues. An alternative way to measure the connection speed is to download the SpeedTest app, select the nearest serv...

  • Speed Testing

    Overview From time to time, there may be a requirement to test the speed throughput of Kerio Control in its environment to ensure that the Kerio Control configuration is not limiting the internet conn...

  • Considering the Effect of Concurrent Maximum Users for Maximum Performance on Kerio Control

    Overview Because of the overusing the Kerio Control appliance, the users may face a slow download/upload speed and the overall degraded responsiveness of the Internet connection. The WAN and LAN inter...

  • Kerio Control crash with ACPI Bios errors

    Overview It might happen the hardware box, such as NG500, became unresponsive for a certain period of time. The workaround with power cycling fixed the crashing problem. Upon further investigation, th...

  • Schedule Kerio Control Restart daily

    Overview It might happen some devices such as notebooks, WiFi routers, etc, connected to the Kerio Control network are unable to browse the Internet normally. The automatic users' logout is correctly ...

  • High-spec Internet link bandwidth support

    Overview While using Internet connection speeds over 1.0 Gbps, Kerio Control might reduce the actual speed because of the advanced filtering features, such as Intrusion Prevention (IPS), Antivirus, Ba...

  • Analyzing Kerio Control crashes

    Overview While the Kerio Control is experiencing issues with non-optimized source code, it might crash. The main processes report the major failure and afterward generate the core dump. If the crash o...

  • Improving Speed performance

    Overview While having Internet speed drops with Kerio Control, several firewall features might be causing such issues. As a result, users may face Internet outages, connectivity, and ping problems whi...

  • Primary link keeps dropping; VirtIO driver used for VM networking

    Overview You are experiencing a recurrent connectivity issue in which the primary link keeps dropping, even when there is not much traffic. The internet service may still be working without service in...