The transmitter Wilsdruff is a medium wave radio broadcasting facility near Wilsdruff, Germany. Until the nineties there was a transmitter for 1044 kHz with 250 kilowatts transmission power. This was a 153-metre guyed steel tube mast, insulated with respect to ground. Since the mid nineties transmission power is only 20 kilowatts. The new transmitter is in a circular building on which the mast stands. The old transmitter of the fifties is a technical monument. The whole facility is a relic from the Joseph Stalin era with a high fence (double fence with dog track and watchtowers) which is still almost
Built-in Encryption: the software has at least one method of encrypting the data between the local and remote computers, and the encryption mechanism is built into the remote control software.
Multiple sessions: the ability to connect to a server in many users, and each one see his different desktop
NAT Passthrough: the ability to connect to the server behind a NAT without configuring the router's port forwarding rules. It offers an advantage when you can't reconfigure the router/firewall (for example in case it is on the Internet service provider's side), but is a serious security risk (unless the traffic is end-to-end encrypted), because all the traffic will pass through some proxy server which in most cases is owned by the remote access application's developers.
Listening mode: where a server connects to a viewer. The server site does not have to configure its firewall/NAT to allow access on port 5900 (or 5800); the onus is on the viewer, which is useful if the server site has no computer expertise, while the viewer user would be expected to be more knowledgeable.
Seamless Window: the software allows an application to be run on the server, and just the application window to be shown on the client's desktop. Normally the remote user interface chrome is also removed, giving the impression that the application is running on the client machines.
Audio Support: the remote control software transfers audio signals across the network and plays the audio through the speakers attached to the local computer. For example, music playback software normally sends audio signals to the locally attached speakers, via some sound controller hardware. If the remote control software package supports audio transfer, the playback software can run on the remote computer, while the music can be heard from the local computer, as though the software were running locally.