Re: [tor-relays] Relay configuration for FreedomBox

[Lance Hathaway <qhltx@xxxxxxxxx>]

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On 18/03/2014 7:59 PM, James Valleroy wrote:
> Do you see any vulnerabilities, attacks, or risks with the current 
> configuration, and are there any changes that you would recommend?
> 
> [1] https://wiki.debian.org/FreedomBox [2]
> https://www.torproject.org/docs/bridges#RunningABridge

If you're going to be running these as bridges, it seems to make sense
to include obfsproxy support, probably with obfs3 and scramblesuit [0]
enabled right off the bat.

Note that scramblesuit requires tor 0.2.5.1 or higher [1], and
obfsproxy should be at 0.2.7 or higher [3].

Lines to add to the torrc:
1. ServerTransportPlugin obfs3,scramblesuit exec /usr/bin/obfsproxy
managed ([0])
2. ServerTransportListenAddr obfs3 0.0.0.0:<port number> (if you want
to preset your obfs3 port, will be random otherwise) ([3])
3. ServerTransportListenAddr scramblesuit 0.0.0.0:<port number> (if
you want to preset your scramblesuit port, will be random otherwise) ([3])
4. ExtORPort auto (used internally between tor and obfsproxy, does not
need to be forwarded externally, so auto should be fine) ([4])

If I'm giving bad advice, somebody please speak up to correct me!

 -Lance


[0]
https://lists.torproject.org/pipermail/tor-relays/2014-February/003886.html
[1]
https://lists.torproject.org/pipermail/tor-relays/2014-February/003898.html
[2]
https://lists.torproject.org/pipermail/tor-relays/2014-March/004074.html
[3]
https://www.torproject.org/projects/obfsproxy-debian-instructions.html.en
[4]
https://lists.torproject.org/pipermail/tor-relays/2014-February/003962.html
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