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Management Teamviewer cessible at any time during normal remote support. From the Teamviewer startup window, use Extras | Options to change various settings, such as your own computer name, or to assign a fixed password for remote logins. Also, you can specify which privileges you want to grant a remote user accessing a system across the wire. Teamviewer will also accept a whitelist or blacklist of computers that are allowed or not allowed to access your computer. File Transfers File transfers occur in a separate window (Figure 2) that features a twocolumn view, with your own computer on the left and the remote computer on the right. To transfer files, just select them and click the button above the column. This seems a little convoluted; drag-and-drop, or at least double-clicking, to transfer files would make more sense. The vendor aims to change this soon. Also, the Windows-style Wine symlinks and drive letters are a little irritating for Linux users. In normal remote support mode, a hideable Teamviewer function bar is displayed on the remote desktop, and you can use it to access a full set of important remote control functions. On the bottom right is the connection monitor, which you can also hide and which tells you who is accessing the computer across the wire (Figure 3). If you so desired – again this could be useful for training purposes – the program will use screencasting to monitor activities on the remote computer. The screencast files you can save only contain the data stream transmitted across the wire by Teamviewer and are thus quite compact. Administrators can create a list of computers for single-click access to remote machines. If needed, you can change the transmission focus. The High speed option reduces the color depth to speed up the transmission. If you prefer perfect image quality at the cost of smoother operations, you can opt for this in the View menu. The Automatic setting changes the mode to reflect the connection. Unfortunately, Teamviewer changes the standard gray of some desktops (including Gnome on Ubuntu) to a horrible pink. Because I didn’t notice any speed boosts in reduced color mode, you might prefer to keep a high-quality mode, for Linux-to-Linux connections, at least. A couple of options make the remote support experience smoother. To begin with, you will want to disable desktop effects, such as those provided by Compiz. Teamviewer only transfers the window content and not the windows, so window zooms and soft fades just create unnecessary traffic. A Flash blocker for the browser is also a good idea for the same reason. Animated ads cause an unnecessarily high level of data – and the bigger the ad space, the worse the problem. Beta Blockers The older the distribution I tried, the more difficulties I had in testing. The program performs better and is more stable on more recent versions; for example, virtually no problems occurred in connections between Ubuntu 9.04 and 9.10. I definitely advise against changing the resolution on remote Linux clients, because it typically caused Teamviewer to crash on the client. Also, you shouldn’t change the native system settings during remote access, because that can interrupt the data stream from the remote machine. Another failing: The mouse cursor doesn’t change its appearance from an arrow to a hand, for example, if it moves outside of a window or title bar. The vendor has promised to fix this before the final release. Conclusions Teamviewer is an easy-to-use and practical piece of software. Even if you aren’t an administrator or console jockey, it gives you a really simple approach to managing machines remotely – or for accessing your computer when you’re on the road. Teamviewer works quite well on Linux, even though the beta had a few bugs. The vendor promises to have everything resolved by the time of the final release. One of Teamviewer’s main strengths is its cross-platform compatibility between Linux, Windows, Mac OS X, and even web browsers and the iPhone. Also, the connection always works. n Figure 3: View of the remote desktop in Teamviewer.¡ Info [1] Teamviewer: [http:// www. teamviewer. com/ index. aspx] 66 Admin 01 www.admin-magazine.com
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