[squid-users] Dropbox and GoogleDrive apps won't connect with SSLBump enabled

Jason Haar Jason_Haar at trimble.com
Mon Aug 31 20:21:38 UTC 2015

On 01/09/15 02:59, Shane King wrote:
> Accessing via the browser may work but the sync clients that sit in
> the system tray use certificate pinning I believe. So if certificate
> pinning is being used, ssl bumping will not work. You will see an
> alert message in the pcap followed by a connection termination.

This stopped working for me last week - I suspect there was an update or

Really frustrating: one of the primary reasons I want to do TLS
intercept is to AV all the viruses published on dropbox!!!

If the Cloud providers go full pinning, the future of TLS Intercept is bleak


Jason Haar
Corporate Information Security Manager, Trimble Navigation Ltd.
Phone: +1 408 481 8171
PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1

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