1. 08 May, 2017 2 commits
    • Mike Perry's avatar
      Bug 17592: Clean up connection timeout logic. · d5a151a0
      Mike Perry authored and Nick Mathewson's avatar Nick Mathewson committed
      This unifies CircuitIdleTimeout and PredictedCircsRelevanceTime into a single
      option, and randomizes it.
      
      It also gives us control over the default value as well as relay-to-relay
      connection lifespan through the consensus.
      
      Conflicts:
      	src/or/circuituse.c
      	src/or/config.c
      	src/or/main.c
      	src/test/testing_common.c
      d5a151a0
    • Mike Perry's avatar
      Netflow record collapsing defense. · b0e92634
      Mike Perry authored and Nick Mathewson's avatar Nick Mathewson committed
      This defense will cause Cisco, Juniper, Fortinet, and other routers operating
      in the default configuration to collapse netflow records that would normally
      be split due to the 15 second flow idle timeout.
      
      Collapsing these records should greatly reduce the utility of default netflow
      data for correlation attacks, since all client-side records should become 30
      minute chunks of total bytes sent/received, rather than creating multiple
      separate records for every webpage load/ssh command interaction/XMPP chat/whatever
      else happens to be inactive for more than 15 seconds.
      
      The defense adds consensus parameters to govern the range of timeout values
      for sending padding packets, as well as for keeping connections open.
      
      The defense only sends padding when connections are otherwise inactive, and it
      does not pad connections used solely for directory traffic at all. By default
      it also doesn't pad inter-relay connections.
      
      Statistics on the total padding in the last 24 hours are exported to the
      extra-info descriptors.
      b0e92634
  2. 22 Feb, 2017 1 commit
  3. 17 Feb, 2017 6 commits
  4. 16 Feb, 2017 1 commit
  5. 15 Feb, 2017 29 commits
  6. 14 Feb, 2017 1 commit