I usually use Wireshark but strumbkled accros this recently…
Microsoft Network Monitor
https://www.microsoft.com/en-gb/download/details.aspx?id=4865
https://en.wikipedia.org/wiki/Microsoft_Network_Monitor
After I installed Microsoft Network Monitor I read the Wikipedia page I discovered Microsoft Network Monitor was been superseded by Microsoft Message Analyzer (https://www.microsoft.com/en-us/download/details.aspx?id=44226). Microsoft Network Monitor seems to work on Windows 7 64bit, but I’ll give Microsoft Message Analyzer a try when I get a moment.