Re: [tor-relays] ControlPort Authentication Options

[Ralph Seichter <m16+tor@xxxxxxxxxxxxxxx>]

On 03.09.2017 02:42, Roger Dingledine wrote:

> In the man page, it's listed as a flag to ControlPort.

Ouch, I did not see this last night. In my defence, I find it hard to
distinguish between "options" and "flags for options" listed on the page
https://www.torproject.org/docs/tor-manual.html.en even during daytime,
because of the lack of distinguishing marks (same font, size, style and
colour). RelaxDirModeCheck is apparently a flag, while ControlListenAddress
directly below it is an option. May I suggest improving the formatting
to avoid future misunderstandings?

In any case, here is what works for me with Tor 0.3.0.10:

  CookieAuthentication 1
  CookieAuthFile /var/lib/tor/cookie_auth
  CookieAuthFileGroupReadable 1
  ControlPort unix:/run/tor/control GroupWritable RelaxDirModeCheck

With this combination, all members of the Tor user's primary group can
access Nyx without manually entering a controller password. Downside, as
mentioned, they cannot see any currently established connections.

By the way, the options above seem inconsistent to me. CookieAuthFile
should have a flag like this

  # Feature request: GroupReadable flag
  CookieAuthFile /path/to/file GroupReadable

instead of using the separate option CookieAuthFileGroupReadable. That
would be consistent with how the ControlPort settings are specified.

My thanks to Damian and Roger.

-Ralph
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