On 26 Feb 2016, at 06:25, Tom Ritter <tom@ritter.vg> wrote:

On 25 February 2016 at 21:00, SMTP Test <simplesmtptest123@gmail.com> wrote:
Hi all,

I try to set up a Tor private network. I found two tutorials online
(http://liufengyun.chaos-lab.com/prog/2015/01/09/private-tor-network.html
and https://ritter.vg/blog-run_your_own_tor_network.html) but seems that
they both are outdated. Could anyone please give me a tutorial or some hints
on building a private Tor network?

Can you explain what you ran into that was outdated or wasn't working?
While time marches on and tor is not quite the same as when I wrote
that - I'm not sure what would have completely broken since then…

Another option is to use chutney to autoconfigure a test tor network on your local machine.
But it can be hard to use and hard to work out what's broken if it doesn't work.
https://gitweb.torproject.org/chutney.git/tree/README

Another question is: what is the minimum
number of required directory authorities for a private Tor network? I am
wondering if one directory authority is enough.

I never tested with 1. I know 3 works.

1 works fine. But there's no redundancy if it stops working.
(Even numbers are avoided because they run the risk of consensus ties: half vote one way, half vote another, and there is no majority consensus about certain information, or the entire network state.)

Tim

Tim Wilson-Brown (teor)

teor2345 at gmail dot com
PGP 968F094B

teor at blah dot im
OTR CAD08081 9755866D 89E2A06F E3558B7F B5A9D14F