Terminating connections

Hello

We have a Windows 2003 Server running an application. The server is at 192.168.1.1 and is named server1.domain.com

The app running on the server needs to speak with another host (server2.domain.com) at 192.168.1.2, however whenever I try to open the app I get the following error: “cannot reach server2.domain.com

So I ran Wireshark on Server1, filtered for 192.168.1.2, and can see the following:

  1. Server1 > Server2 SYN

  2. Server2 > Server1 SYN-ACK

  3. Server1 > Server2 ACK

  4. Server1 > Server2 > PSH-ACK

  5. Server2 > Server1 > FIN, ACK

  6. Server1 > Server2 > ACK

  7. Server 1> Server2 > FIN, ACK

  8. Server2 > Server1 > ACK

How can I find out what Server is causing the termination? I always thought that the termination process was FIN, FIN-ACK, ACK, not FIN-ACK, ACK?