I wouldn't be surprised. Browsing to that page gave me a generic error, so I set the CustomError mode to RemoteOnly to get a more helpful error message. It is a bit more verbose, but I'm not an IIS guy so don't really know where to start with it.
Server Error in '/ReportViewer' Application.
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.100.250:50705
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.100.250:50705
Source Error:
[highlight #EDD400]An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.[/highlight]
Stack Trace:
[highlight #EDD400][SocketException (0x274c): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.100.250:50705]
System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) +239
System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP) +35
System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception) +224
[WebException: Unable to connect to the remote server]
System.Net.HttpWebRequest.GetRequestStream(TransportContext& context) +1878753
System.Net.HttpWebRequest.GetRequestStream() +13
System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +103
ResReportViewer.RemotingServiceRoutines.RemotingServiceRoutinesService.BeginSession(String& strSession) +51
ResReportViewer.Login.GetServiceLogon() +147
ResReportViewer.Login.get_IsComplexSecurityEnabled() +36
ResReportViewer.Viewer.DoRedirect(Page page) +11
ResReportViewer.Viewer.CheckEmpSeq(Page page) +987
ResReportViewer._Default.Page_Load(Object sender, EventArgs e) +127
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +50
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627
[/highlight]
Version Information: Microsoft .NET Framework Version:2.0.50727.5485; ASP.NET Version:2.0.50727.5483