NET's ConfigurationManager class that the node and all of its children are represented by the ProfileInformation class. The node contains the class and assembly reference that tells. For example:Īll of the data contained therein is referenced through classes that inherit from ConfigurationElement, ConfigurationSection, or ConfigurationElementCollection.
#VNC VIEWER FULL#
The application service makes full use of this functionality to store connection profiles for tunneling setup parameters to various VNC servers. They make it relatively painless to define configuration data classes, declaratively populate them through the App.config file, and access them programmatically (as opposed to being forced to load the config file contents into an XmlDocument object and perform XPath queries against it).
NET 2.0 is the dramatically improved configuration classes: ConfigurationElement, ConfigurationSection, ConfigurationElementCollection, etc.
Automating this process is where my application comes in. While this approach is great because we effectively get security for VNC for free, it also means we also have to invoke another program when trying to establish a VNC connection. So, once this tunnel is set up, you instruct your VNC client to connect to the local port that the SSH client is listening on, which will receive the data, encrypt it, transmit it over the SSH connection, decrypt it, and deliver it to the port being listened to by the VNC server process on the remote machine. However, I also specify several command line options for the SSH client process to enable local port forwarding: this means that the SSH client process will start listening on a local port and, when it receives data, it will forward it over the encrypted SSH connection and establish a connection to a local port on the remote server where it delivers the data. Using SSH as an example, here's how it works: I have an SSH server running on port 22 on my home machine and, in order to tunnel data over it, I establish a connection to it from a remote machine. With regards to security, it's generally accepted that the best approach is to "tunnel" VNC data over other ubiquitous, secure protocols such as SSH or SSL and, thanks to the Cygwin platform, this is easily done in Windows. have to be carried out by separate applications. However, this simplicity also means that the protocol is not very robust: there is no support for encryption (several implementations, such as UltraVNC, bolt this functionality onto the side, but I have been less than impressed with the results), and things like remote sounds, printer sharing, port sharing, etc. This means that the protocol is inherently platform-agnostic: all you need to do is be able to take snapshots of parts of the desktop and send them to a remote client. VNC is, at its core, an extremely simple protocol: it's basically a remote frame buffer, so when something changes on the remote desktop, a rectangle of image data containing the changed area is sent to the client which updates its own display. There are pros and cons to both protocols and, I'll be honest, I definitely prefer RDP when possible, but I'm forced to use VNC for my home machine.
#VNC VIEWER WINDOWS#
You might be wondering, why bother with VNC? RDP (Remote Desktop Protocol, used by Microsoft in Terminal Services) comes standard with Windows, right? Well, not really: if you're still running Windows 2000 Professional, like me, then VNC is really the only choice you have for remote desktop management since Terminal Server isn't supported on Windows 2000 Professional. So, these frustrations led me to develop my own secure VNC viewer application.
Secondly, it's not implementation agnostic: it contains inputs for custom parameters for several of the major VNC implementations, but a better approach would be to allow the user to simply specify the viewer application that they wish to run and the command line parameters to use with that application.
#VNC VIEWER PROFESSIONAL#
First, ssvnc is kind of clunky, and lacks a professional polish it spawns several other windows to handle the secure connection process, and doesn't provide a unified interface. There's a cross-platform GUI application called ssvnc that handles setting up an SSL or SSH tunnel automatically prior to launching the VNC viewer process but, frankly, it has a number of shortcomings that led me to develop my own secure VNC viewer application. The two most common ways to do this are to tunnel VNC data through an SSL or an SSH connection. While VNC is a great, cross-platform remote desktop protocol, it is inherently insecure, and relies on the system administrator that installs it to tunnel it through another secure communication protocol if the VNC server is to be publicly accessible.
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