I'm playing around with WinDump, and I noticed that my computer is sending out UDP packets on port 137 (Netbios SMB service). Now that wouldn't really make me curious if it weren't for the fact ...

To inspect the packets of TCP and UDP they are using different parameters are frame no. On wire, frame length, IP source, IP destination, header length of the packets and also window size value etc.

UDP buffer size: 112 KByte (default) [ 3] local 192.168.0.2 port 5001 connected with 192.168.0.4 port 2818 [ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams ...