Changes between Version 23 and Version 24 of thesis


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Timestamp:
Apr 11, 2011 5:18:08 PM (8 years ago)
Author:
zzz
Comment:

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  • thesis

    v23 v24  
    1616
    1717Sec, 4.1:
    18    Long paths might be much harder than in ref. 22, our limit is 7 hops max and there are restrictions preventing a peer in the previous and next hop. More complex long paths may be possible.
     18   Long paths might be much harder than in ref. 22; our absolute limit is 7 hops max (due to the max length of the tunnel build request message). As of 0.8.4, here are further restrictions enforced: Router A will not build a tunnel A-A. An unmodified router B will not build a tunnel A-B-A (although a hostile B could build this tunnel). A tunnel A-B-C-A cannot be prevented even with non-hostile B and C. So the longest without cooperation would be A-B-C-A-D-E-A. More complex long paths using multiple tunnels or garlic messages may be possible, although there are also maximum message expiration times enforced.
    1919
    20    Actually I2P doesn't use peers from the same /16 in the same tunnel. Since your attack doesn't require two attackers in the same tunnel, the /16 restriction may not be relevant here.
     20   Actually, I2P doesn't use peers from the same /16 in the same tunnel. It does allow multiples in the fast tier. Since your attack doesn't require two attackers in the same tunnel, the /16 restriction may not be relevant here.
    2121
    2222Fig. 4.2: outbound tunnel labeled as inbound; The "monitor peers" from Fig. 4.1 with red and black stripes are now labeled "A" in this figure, which is confusing.
     
    7171   3) Would server-imposed response delays help?
    7272
     73   4) Disallow multiples from the same /16 in the fast tier
     74
    7375Sec 7 Conclusion:
    7476 What the "devs decided":