Friday, December 22, 2017

Anyone ever deal with Dropbox's lan sync discovery protocol?

Was trying to figure out why the soft-phone on my workstation could not configure an IP so I decided to open up Wireshark to troubleshoot this further. What I was was a number of broadcasts from Dropbox originating from a single user. Now I have been looking into how to limit or completely eliminate these broadcasts from Dropbox but not really finding much. Wondering if anyone here has ever dealt with this before.

EDIT: Did some more reading and found that LAN Sync requires access to UDPport 17500. So that is a good starting point but I need to make sure nothing else will be using this port internally. I am thinking that this can be blocked on endpoint firewall/IPS.



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