X11 access denied

HTTP/1.1 401 Unauthorized
WWW-Authenticate: Basic realm="WEB Remote Viewer"
Content-Type: text/html
Content-Length: 351
Date: Wed, 15 Jan 2025 08:47:30 GMT
Server: lighttpd/1.4.29

MS .NET Remoting services

.NET



System.Runtime.Remoting.RemotingException: Tcp channel protocol violation: expecting preamble.
   at System.Runtime.Remoting.Channels.Tcp.TcpSocketHandler.ReadAndMatchPreamble()
   at System.Runtime.Remoting.Channels.Tcp.TcpSocketHandler.ReadVersionAndOperation(UInt16& operation)
   at System.Runtime.Remoting.Channels.Tcp.TcpServerSocketHandler.ReadHeaders()
   at System.Runtime.Remoting.Channels.Tcp.TcpServerTransportSink.ServiceRequest(Object state)
   at System.Runtime.Remoting.Channels.SocketHandler.ProcessRequestNow()

HTTP/1.1 400 Bad Request
Connection: Close
Content-Length: 0