[tor-bugs] #8591 [Censorship analysis]: GFW actively probes obfs2 bridges

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#8591: GFW actively probes obfs2 bridges
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 Reporter:  phw                                            |          Owner:  phw
     Type:  task                                           |         Status:  new
 Priority:  normal                                         |      Milestone:     
Component:  Censorship analysis                            |        Version:     
 Keywords:  obfs2, gfw, active probing, censorship, china  |         Parent:     
   Points:                                                 |   Actualpoints:     
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Comment(by phw):

 I quickly tested obfs3. It also gets probed but not blocked. The probes
 think it's talking obfs2 and send obfs2 handshake data to it. Since the
 handshake fails, it's probably not getting blocked.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8591#comment:6>
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