What is the crowd's opinion of AMMYY Admin?

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I'm always weary of using remote tools that are easy to use and setup, there is usually a security risk. There's a reason vnc gets picked up as malicious by a lot of antivirus and spyware programs, its because it listens on well known ports and has exploits. I'm especially weary of a remote tool that is "transparent for Firewalls, you don't have to make additional adjustments on the Firewall or VPN connection settings", there has to be a catch there somewhere. http://www.ammyy.com/en/admin_features.html