Filename: 150-exclude-exit-nodes.txt Title: Exclude Exit Nodes from a circuit Version: $Revision$ Author: Mfr Created: 2008-06-15 Status: Closed Implemented-In: 0.2.1.3-alpha Overview Right now, Tor users can manually exclude a node from all positions in their circuits created using the directive ExcludeNodes. This proposal makes this exclusion less restrictive, allowing users to exclude a node only from the exit part of a circuit. Motivation This feature would Help the integration into vidalia (tor exit branch) or other tools, of features to exclude a country for exit without reducing circuits possibilities, and privacy. This feature could help people from a country were many sites are blocked to exclude this country for browsing, giving them a more stable navigation. It could also add the possibility for the user to exclude a currently used exit node. Implementation ExcludeExitNodes is similar to ExcludeNodes except it's only the exit node which is excluded for circuit build. Tor doesn't warn if node from this list is not an exit node. Security implications: Open also possibilities for a future user bad exit reporting Risks: Use of this option can make users partitionable under certain attack assumptions. However, ExitNodes already creates this possibility, so there isn't much increased risk in ExcludeExitNodes. We should still encourage people who exclude an exit node because of bad behavior to report it instead of just adding it to their ExcludeExit list. It would be unfortunate if we didn't find out about broken exits because of this option. This issue can probably be addressed sufficiently with documentation.