[tor-bugs] #9601 [BridgeDB]: Cyberoam firewall blocks obfs2/3 bridge addresses

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Aug 27 00:47:50 UTC 2013


#9601: Cyberoam firewall blocks obfs2/3 bridge addresses
----------------------+---------------------
 Reporter:  Sherief   |          Owner:
     Type:  task      |         Status:  new
 Priority:  normal    |      Milestone:
Component:  BridgeDB  |        Version:
 Keywords:            |  Actual Points:
Parent ID:            |         Points:
----------------------+---------------------
 A user reported that his University uses Cyberoam firewall[0] and he can't
 establish any Tor connections since then. So I gave him the PT bundle with
 four working bridges one obfs2 and three obfs3, later he replied back with
 a log that shows that the firewall blocked all the bridges[1]

 isis said that it could be an sslmitm[2][3]. But according to sysrqb there
 is no ssl handshake to mitm. so something else was used.

 [0]: https://rt.torproject.org/Ticket/Display.html?id=13271
 [1]: Log attached.
 [2]: https://blog.torproject.org/blog/security-vulnerability-found-
 cyberoam-dpi-devices-cve-2012-3372
 [3]: http://blogs.law.harvard.edu/herdict/2012/07/11/cyberoam-fixes-flaw-
 threatening-tor-users/

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9601>
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