CSocket does not work on LAN - c++

Question

I'm learning network-programming and try to develop a simple socket application that used CSocket class from MFC. And found myself hitting a wall that need some help.
I want the server side listens on a certain port, example 1001. Then from other computer, on the same sub-net, it should successfully telnet to that port. My program works correctly on localhost, but fail on the LAN, although I have opened that port on firewall of listener.
Here is my code from listener:
//CListenSocket is derived from CSocket
CListenSocket myListener;
myListener.Create(1001);
myListener.Listen();
//OnAccept()
//CConnectSocket is also derived from CSocket
CConnectSocket myConnect;
myListener.Accept(myConnect);
I built the release version using VS2008, here is the screenshot of the configuration properties:
So at this stage, when I run the program, netstat -an show this line:
TCP 0.0.0.0:1001 0.0.0.0:0 LISTENING
Then on that machine telnet 127.0.0.1 1001, this line appears.
TCP 127.0.0.1:1001 127.0.0.1:2681 ESTABLISHED
So I think my code is correct. After that I tried from other machine with the same sub-net, and the telnet fail:
Connecting To 192.168.2.199...Could not open connection to the host, on port 1001: Connect failed
Note: that my listener is on 192.168.2.199, and the connector is on 192.168.2.3. Both nodes can successfully ping and sharing file with each other. I also add both Inbound Rule and Outbound Rule for the program on my firewall, here is the properties of the rule:
For more information: On my listener node, there is Apache HTTP server installed on it, so I have the other node telnet to port 80, and it works...
So where did I miss? please help, thank you in advance.
EDITION 1:
Attempt for troubleshooting
So after hitting my head to the table for a while, I quickly make a decision for not use telnet for client anymore. But make a small client program to catch errors:
//CClientSocket is derived from CSocket
CClientSocket clientSocket;
clientSocket.Create();
int iConnect = clientSocket.Connect(ipAddress,1001) //ipAddress is a variable of MFC's text box on GUI.
switch (iConnect)
{
case 0:
{
DWORD errorNumber = ::GetLastError(); //catch error code
CString s_errorNumber;
s_errorNumber.Format("%d",errorNumber); //format to CString for easy echo
MessageBox("Connection fail :"+s_errorNumber)
clientSocket.ShutDown(CAsyncSocket::both);
clientSocket.Close();
break;
case SOCKET_ERROR:
if (::GetLastError() != WSAEWOULDBLOCK)
clientSocket.ShutDown(CAsyncSocket::both);
else
clientSocket.AsyncSelect();
break;
default:
{
MessageBox("Connection Established.");
}
break;
}
And the error number is: 10061. I checked this code on MSDN an it is WSAECONNREFUSED-Connection refused.
Now we know the problem here must be somewhere in the listener's firewall... still hiting my head to the table.