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| author | Nick Mathewson <nickm@torproject.org> | 2007-07-29 05:20:31 +0000 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2007-07-29 05:20:31 +0000 |
| commit | 3b0b185a62e6ae0d9015ff5d6dc3ab06be7dd3c5 (patch) | |
| tree | 088032692e711ee87470210d32107bb2b913a2ce /proposals/109-no-sharing-ips.txt | |
| parent | feb59d9c380f505078006e7bb4982ad6cb1a92e7 (diff) | |
| download | torspec-3b0b185a62e6ae0d9015ff5d6dc3ab06be7dd3c5.tar.gz torspec-3b0b185a62e6ae0d9015ff5d6dc3ab06be7dd3c5.zip | |
r13979@catbus: nickm | 2007-07-29 01:20:20 -0400
Implement proposal 109: As an authority, never call more than 3 servers per IP Running and Valid. Prefer Running servers to non-running ones; then prefer high-bandwidth to low-bandwidth. Needs testing.
svn:r10968
Diffstat (limited to 'proposals/109-no-sharing-ips.txt')
| -rw-r--r-- | proposals/109-no-sharing-ips.txt | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/proposals/109-no-sharing-ips.txt b/proposals/109-no-sharing-ips.txt index 4a5f1a8..483b8b5 100644 --- a/proposals/109-no-sharing-ips.txt +++ b/proposals/109-no-sharing-ips.txt @@ -4,7 +4,7 @@ Version: $Revision$ Last-Modified: $Date$ Author: Kevin Bauer & Damon McCoy Created: 9-March-2007 -Status: Accepted +Status: Closed Overview: This document describes a solution to a Sybil attack vulnerability in the @@ -34,14 +34,19 @@ Specification: For each IP address, each directory authority tracks the number of routers using that IP address, along with their total observed bandwidth. If there are more than MAX_SERVERS_PER_IP servers at some IP, the authority should - "disable" all but MAX_SERVERS_PER_IP servers. If the total observed + "disable" all but MAX_SERVERS_PER_IP servers. When choosing which servers + to disable, the authority should first disable non-Running servers in + increasing order of observed bandwidth, and then should disable Running + servers in increasing order of bandwidth. + + [[ We don't actually do this part here. -NM + + If the total observed bandwidth of the remaining non-"disabled" servers exceeds MAX_BW_PER_IP, the authority should "disable" some of the remaining servers until only one server remains, or until the remaining observed bandwidth of non-"disabled" - servers is under MAX_BW_PER_IP. When choosing which servers to disable, - the authority should first disable non-Running servers in increasing order - of observed bandwidth, and then should disable Running servers in - increasing order of bandwidth. + servers is under MAX_BW_PER_IP. + ]] Servers that are "disabled" MUST be marked as non-Valid and non-Running. |