Save CPU time, disable Screen Saver on Mac OS X VMs

By default Mac OS X comes with the Screen Saver enabled, and set to kick in after 20 min. This is good in the physical world, to avoid screen burn in and somebody watching. In the virtual world, it does not make much sense, because there is no screen, so no risk of screen burn in or for that matter somebody watching. But besides the above mention reasons, there is another reason to disable the Screen Saver in Mac OS X VMs. And that is the CPU utilization when the Screen Saver is running... Continue reading

Some advise on deploying the Kerio Control Virtual Appliance

At my workplace, Artwork Systems Nordic A/S, we have previously used the Kerio Control Box 3110, as our firewall.

But do to that we have virtualized the main part of our servers, we decided to do the same with our firewall... Continue reading

Examining Kerio Control Traffic Rules, by converting them to HTML

The other day I came across a script written by Tony Lawrence (Link) to convert an exported winroute.cfg configuration from Kerio Control firewall, to HTML, so that it was easier to examine the rules from the firewall, instead of looking at them directly in the configuration file or by loading them into your our firewall.

The idea is very good, especially if your are a consultant for multiple businesses running Kerio Control firewalls. But the script was not perfect, seen with my own eyes... Continue reading