I just read at speedguide.net:
"Dropbox LanSync Protocol (db-lsp) also uses port 17500 (TCP/UDP). It is used to synchronize file catalogs between Dropbox clients on a local network."
So when you see something like this on your LAN:
22:30:04.224001 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto: UDP (17), length: 156) _IP_.17500 > _IP_.255.17500: [udp sum ok] UDP, length 128
Wow they use the the same port Trojans are known to use.
Don't freak out and check your Dropbox settings. Under Preferences -> General uncheck the "Enable LAN sync" box.
Monday, August 1, 2011
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