In computing, Virtual Network Computing (VNC) is a graphical desktop-sharing system that. VNC is platform-independent – there are clients and servers for many GUI-based. There are a number of variants of VNC which offer their own particular. 5900+N, where N is the display number (usually:0 for a physical display). Home Documents Enterprise Cloud 2.0 Tutorial v2.7.0 11. Using Load Balancer 11.2. Configuration example of Citrix NetScaler VPX 11.2.4. Load Balancing function 11.2.4.8. Notifying client IP address to a registered Web Server. A Load Balancer has X-Forwarded-For function to notify client IP address to a registered Web Server.
How to communicate with an Exchange Server using ASP.NET Core 2.0
Apr 13, 2018 06:57 AM|IsakV|LINK
Hello,
I'm trying to create an ASP-NET Core 2.0 application that is meant to be used to communicate with an on-premise Exchange server.
I need to be able to get calendar-events-data from all the email-accounts connected to this server, and I need to be able to have a calendar-interface in the web-application which users can use to post new calendar-events that then gets updated on the server.
I'm trying to create an ASP-NET Core 2.0 application that is meant to be used to communicate with an on-premise Exchange server.
I need to be able to get calendar-events-data from all the email-accounts connected to this server, and I need to be able to have a calendar-interface in the web-application which users can use to post new calendar-events that then gets updated on the server.
I have looked into the EWS Managed API and tried to use a fork that I think is supposed to work with ASP.NET Core, but it seems like it's not very active and I cannot get it to work with ASP.NET Core 2.0. This is the fork I have been trying to use: https://github.com/sherlock1982/ews-managed-api
Is there another approach that is better suited to work with ASP.NET Core 2.0? It's quite a small application, and buying a subscription for every user to use Office 365 or such will become to expensive, since the company doesn't have any subscriptions like this already, and the only useage for that type of subscription would be for this application.
What are my alternatives? I'm very new to this and have never worked with an exchange server before.
What are my alternatives? I'm very new to this and have never worked with an exchange server before.
Thanks so much in advance,
Best regards Isak
From Wikipedia, the free encyclopedia
Screenshot of NetBus 1.5.3 client | |
Developer(s) | Carl-Fredrik Neikter |
---|---|
Stable release | 2.01 Pro |
Operatingsystem | Microsoft Windows |
Type | remote administration |
License | shareware |
NetBus or Netbus is a softwareprogram for remotely controlling a Microsoft Windows computer systemover a network. It was created in 1998 and has been verycontroversial for its potential of being used as a backdoor.
NetBus was written in Delphi by Carl-Fredrik Neikter, a Swedishprogrammer in March 1998. It was in wide circulation before Back Orifice wasreleased, in August 1998. The author claimed that the program wasmeant to be used for pranks, not for illegally breaking intocomputer systems. Translated from Swedish, the name means'NetPrank'.
However, use of NetBus has had serious consequences. In 1999,NetBus was used to plant child pornography on the workcomputer of a law scholar at Lund University. The 3,500 images werediscovered by system administrators, and the law scholar wasassumed to have downloaded them knowingly. He lost his researchposition at the faculty, and following the publication of his namefled the country and had to seek professional medical care to copewith the stress. He was acquitted from criminal charges in late2004, as a court found that NetBus had been used to control hiscomputer.[1]
There are two components to the client-server architecture. The servermust be installed and run on the computer that should be remotelycontrolled. It was a .exe file witha file size of almost 500 KB. The name and icon varied a lot fromversion to version. Common names were 'Patch.exe' and'SysEdit.exe'. When started for the first time, the server wouldinstall itself on the host computer, including modifying theWindows registry so thatit starts automatically on each system startup. The server is a facelessprocess listening for connections on port 12345(in some versions, the port number can be adjusted). Port 12346 isused for some tasks, as well as port 20034.
The client was a separate programpresenting a graphical user interface thatallowed the user to perform a number of activities on the remotecomputer. Examples of its capabilities:
- Keystroke injection
- Screen captures
- Program launching
- File browsing
- Shutting down the system
- Opening / closing CD-tray
- Tunneling NetBusconnections through a number of systems
The NetBus client was designed to support the following operatingsystem versions:
Netbus client (v1.70) works fine in Windows 2000 and in Windows XP as well. Major parts of theprotocol, used between the client and server interaction (inversion 1.70) are textual. Thus the server can be controlled bytyping human understandable commands over a raw TCP connection. Itis more difficult than using the client application yet allows oneto administrate computers with NetBus from operating environmentsother than Windows, or when original client is not available.Features (such as screen capture) require an application withability of accepting binary data, such as netcat. Most of more common protocols (like theInternetRelay Chat protocol, POP3SMTP, HTTP) can also be used over a rawconnections in a similar way.
NetBus 2.0 Pro was released in February 1999. It was marketedcommercially as a powerful remote administration tool. It was lessstealthy, but special hacked versions exist that make it possibleto use it for illegal purposes.
All versions of the program were widely used by 'script kiddies' and was popularized by therelease of BackOrifice. Because of its smaller size, Back Orifice can be usedto gain some access to a machine. The attacker can then use BackOrifice to install the NetBus server on the target computer. Mostanti-virus programs detect and removeNetBus.
Also existing is a tool called NetBuster. Itpretends to be a running NetBus server, but causes connectingNetBus clients to crash. Additionally, a program calledNetBusterBuster could be used to crash a remoteNetBuster.
Externallinks
- Information about Back Orificeand NetBus — Information from anti-virus vendor Symantec
References
- ^'Offer för porrkupp'. Expressen. November 28, 2004
. http://www.expressen.se/1.153215 .
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