*The Macbook was sending every 30 seconds. This UDP packet has some payload attached to it for identify itself to the receiver. The source and destination port of the packet are set to 17500. The dropnbox process running on your computer sends a UDP broadcast packet in the local network every 30 seconds*. After an hour or so I believe that the following steps are involved in Dropbox’s LAN syncing –ġ. I then decided to dig a little more on wire shark and with some google search came to the conclusion that it was a dropbox feature to sync data changes within the local network.Įarlier today(yes 1 year later) I decided to spend some more time looking at the traces and try to figure out the details of the LAN sync protocol. I had not updated/edited any files recently, so was surprised to see it. One that got my particular attention was a packet that was related to the popular service dropbox. I closed all my browser windows and other chat/im services, and still noticed a lot of chatter on the network. A year ago, I fired up wire shark on my home network to check out the packet flow of the DHCP process.

What is dropbox lan sync