...I use CAT at work place and my network security guy lgot alert and see a lots traffic come from my PC and he ask me to remove program ;( damn it.
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If you want to run CAT independently on your network uptime, bandwidth or other restrictions, use the smallest Windows Azure instance (less than $20 monthly in Pay As You Go) or the free tier of Amazon AWS. The only condition needed is that outgoing RDP connections are not blocked. RDP ports can be set other than default for both providers. And you must have remote desktop client of course, Remote Desktop is bundled with Windows, just try searching Remote Desktop in your system's language in Start Menu.