Remote Desktop Protocol (RDP) is actually a particular protocol developed by the Microsoft Inc company in order to provide the user with the best graphic interface (GUI) while connecting to another computer over the existing network connection. A user is using this RDP client software for this specific purpose as some other computers should have to run RDP server software.
Functions and features of RDP
RDP is a highly secure network communications protocol which is designed for the remote access and also the remote management of the virtual desktops, RDP terminal server and also the several desktop applications. It also allows an administrator of the network to remotely diagnose & resolve the different kinds of the problems encountered by the individual subscribers. Remote desktop protocol is also available for the several versions of the Windows OS and also for Apple Mac Operating System. There is as well as the open source version of the remote desktop protocol is currently available now. The highly considerable features of the RDP include:
- Bandwidth reduction
- Resource sharing
- Smart card authentication
- Capability to temporarily disengage without signing off
- Ability to use multiple numbers of displays
It also consents for the redirection of the diverse favourable process such as printing and audio. When considering the remote desktop protocols, it can able to carry up to 64,000 separate channels especially for the purpose of data transmission. At the same time, the records are secured by using 128 bit keys and there is also the bandwidth slow down component in order to optimize the data transfer rate in the lowest speed connections.
How does RDP server works?
The remote version of the RDPS (Remote Desktop Protocol Server) is highly exposed to the main-in-the middle (MiTM) attack. The RDP client usually doesn’t actually put more effort to validate the identity of the server while doing the encryption for the data transmission. If an attacker has an ability of intercepting the traffic from the remote desktop protocol server, it can able to set up encryption with the server and client without being detected. This natural attack may allow an attacker to get any sensitive information transmitted including the authentication credentials.
This mistake occurs only because the remote desktop protocol server stores the hard coded RSA secret key in the library file named mstlsapi.dll. When any person will get access to this library data on any version of the Windows operating system, then they can also retrieve a key and also use it for this MiTM attack. The only solution to get rid of this fault is forcing the use of SSL as the transport layer while transmitting the data for this service if supported. The second solution is optional which is selecting a setting like “Allow connections only from the systems running remote desktop computers with the network level authentication” if it is available. According to the ITU-T-120 protocol set, remote desktop protocol is highly compatible with the various types of the LAN (Local Area Network) protocols & topologies.