The unlimited-user model costs 1,647 ex VAT, but you can save 554 with a 25-user license. Ongoing costs are reasonable; unlimited and 25-user software maintenance charges are 478 and 316 per year and include updates to the Control, Sophos AV and web filter services.
Each licensed user has the ability to simultaneously connect up to five devices. Each of those devices can create multiple connections to Kerio Control. You can monitor and control those connections by configuring connection limits.
Kerio Control virtual appliances are licensed the same as hardware appliances. Since you control the size of the underlying hardware and the amount of resources dedicated to the virtual appliance, you can scale up to and above the NG500 performance level. 2b1af7f3a8