NAT IP .Net Framework Unhandled exception error

[ashenoy]

Well we have a normal network for our MIS system
However in some remote branches,we cannot access the MIS system
The branches in the remote areas have a Nat IP.
The internet connection to those branches is given by a local internet service provider
The local service provider has assigned a different Web Address.
when we use the web address given by the local service provider we get the following page

" <?xml version="1.0" ?>
- <doc>
- <assembly>
<name>BranchSelection</name>
</assembly>
- <members>
- <member name="P:KKK.ASC.UI.Selection.My.Resources.Resources.ResourceManager">
<summary>Returns the cached ResourceManager instance used by this class.</summary>
</member>
- <member name="P:KKK.ASC.UI.Selection.My.Resources.Resources.Culture">
<summary>Overrides the current thread's CurrentUICulture property for all resource lookups using this strongly typed resource class.</summary>
</member>
- <member name="T:KKK.ASC.UI.Selection.My.Resources.Resources">
<summary>A strongly-typed resource class, for looking up localized strings, etc.</summary>
</member>
</members>
</doc>

In some offices ,it gives the username and password screen
When we enter the username and password,
It gives an unhandled exception error
The details of the error are as follows
"
************** Exception Text **************
System.Net.WebException: Unable to connect to the remote server ---> 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
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
--- End of inner exception stack trace ---

Server stack trace:
at System.Net.HttpWebRequest.GetRequestStream()
at System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessAndSend(IMessage msg, ITransportHeaders headers, Stream inputStream)
at System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream)
at System.Runtime.Remoting.Channels.SoapClientFormatterSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at KKK.ASC.UI.Interface.ILogin.LogOut(String strUserId)
at ASC_Compilation_.frmStartUp.frmStartUp_FormClosing(Object sender, FormClosingEventArgs e)
at System.Windows.Forms.Form.OnFormClosing(FormClosingEventArgs e)
at System.Windows.Forms.Form.CheckCloseDialog(Boolean closingOnly)"


Please guide me in this matter
AS

[super soaker]

Please check to make sure that your computer, on port 8080 is able to receive the connection response. As you may know, a TCP/IP connection involves a three-way handshake: your computer will send a SYN request to the remote machine, which is to respond to you with SYN+ACK. Your computer is then meant to send back an ACK. If this does not work, you will need to look at the network traffic using a tool like Microsoft Network Monitor https://connect.microsoft.com/site/s...spx?SiteID=216.

[ashenoy]

Can there be a chance of lack of bandwidth or Latency
The framework used is .Net Framework.
Let me elaborate as to what's happening
Our application works on normal lease lines but in remote areas,our client use
a different Internet Service Provider as the normal lease lines don't have access to remote locations where there is no possibility of a cable connection
Hence VSAT is used
I need to get to the root of this error as i wanna know "Is it a development issue or a network issue".
The offices in these remote locations use a NAT IP
Hence i need to see the crux of the issue

[JAMES_911]

Have you tried the command : #clear ip nat translation * and then try to create static nat. I don't know much about .NET Webservices but I may be right to say it is possible that it's because of your connection to the Internet that you are unable to access Web Services. You are probably running your server behind a proxy. You may search for alternatives or seek a direct connection

[ashenoy]

On normal lease lines the service seems to be workin' fine
However in offices which are in remote areas,Nat ip is used and the type of connection is VSAT
Hence the internet is provided by a local service provider
Say we use a web address a.b.c.d for accesing the MIS server
But in those remote areas,the people who are using the local service provider's Vsat,the web address used is different.say instead of a.b.c.d they use a different web address x.y.z.v
Will port forwarding help ???
if so who should open the ports,the server or the local service provider
Please help

[EINSTEIN_007]

Try to do the following:

1) Change the website to listen to ALL UNASSIGNED ip addresses
2) Change the host headers (under advanced) to "Default" (thus removing any reference to the local NATTED address if any).

[ashenoy]

i am a little confused as we have an IP to Ip network
Will port forwarding help.
IF yes,how do you enable port listening
Can you please elaborate the step by which we can enable
port listening
What are the set of commands to be used
How do you go about it

[EINSTEIN_007]

You can use the NETSTAT command to quickly see all the used and listening ports on your computer. Note it is not a complete substitute for a port scanning tool. If you'd like to have your computer remotely scanned for open ports use our Security Scan instead. More information here.

[ashenoy]

What questions should i ask my network admin so that we can resolve the issue
The most important thing i need to know if it is a Network issue or a Development issue?
Will listening to ports help.
-Please guide me further as i am an amateur and need help for resolution

[ashenoy]

After much research ,i found out a thing or two about the error i receive
Below is the error i see when i try to login into the MIS system
"
System.Net.WebException: Unable to connect to the remote server ---> 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
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
at System.Net.ServicePoint.ConnectSocketInternal(Bool ean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
"
A network socket error in a client server scenario occurs when there is a
timeout error due to bandwidth and latency.Now i am stuck between a Rock and a Hard place as i dont know what changes i need to make in a .Net remoting application.i am using VB.net and how can i make the changes and where to make the changes?
If that doesn't work ,then maybe i will go for port forwarding