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We are looking into upgrading our 200 Mbps Fibre internet to 1 Gbps.

Our older Kerio Control Box won't be able to keep up with this; Kerio doesn't seem to offer any hardware that surpasses 900 Mbps in speed.

Is anyone here using Kerio Control with higher speed WANs? I'd love to know more about your setup.

[Updated on: Tue, 26 September 2017 20:12]


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Kerio winroute process appears to be single-threaded.
So, seek high GHz-per-core CPUs, in will scale linearly. Take latest intel 7700K kaby lake, overclock it good, over 5 GHz, and i'm sure it will handle 1 Gbps fiber.
Fast RAM speed will also help.
My setup is a bit defferent, need to handle many simultaneous connections, so i need big cache. CPU of choice is xeon 1650v3 15MB cache, handling 300 mbps good (far better than previous setup with low Ghz cores).

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Something to note is that if you turn on intrusion prevention and/or virus scanning your speed will take a hit. On my gigabit fiber it was 30%, slowing things into the 600Mbps or so range. The 4 cores on my virtual machine never show a high load so I suspect that Sorat is right.

It's hard to get over 900Mbps on a gigabit port if the router actually does anything.
Kerio control uses Snort. Their interface to disable rules was too cumbersome so I just turned it off. I suspect that Snort with a limited ruleset would not be too bad but I have not found a reasonable way to set that up.
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