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[tor-bugs] #6228 [Tor Hidden Services]: NSS module for .onion DNS name resolution

#6228: NSS module for .onion DNS name resolution
-------------------------------------+--------------------------------------
 Reporter:  tux                      |          Owner:     
     Type:  enhancement              |         Status:  new
 Priority:  minor                    |      Milestone:     
Component:  Tor Hidden Services      |        Version:     
 Keywords:  nss,dns,usability,onion  |         Parent:     
   Points:                           |   Actualpoints:     
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 From a usability point of view it'd be great to always have .onion
 addresses resolved via Tor - system wide, by default. It'd make .onion
 addresses a first-class citizen in the overall web browsing experience.

 The idea is to provide a libnss-tor module to by default always resolve
 .onion addresses via Tor, with no need for 'torify', proxy configurations
 within an application etc. Similar to what libnss-mdns does for .local
 addresses for instance.

 Thanks to
 [https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy this]
 I came up with the following setup to achieve the same thing:
  * torrc with 'AutomapHostsOnResolve 1', 'DNSPort 53535' and 'TransPort
 9040'
  * dnsmasq with a 'server=/onion/127.0.0.1!#53535'
  * iptables -t nat -A OUTPUT -p tcp -d 127.192.0.0/10 -j REDIRECT --to-
 ports 9040
  * 'nameserver 127.0.0.1' in /etc/resolv.conf

 However having a libnss-tor for that would remove the iptables/dnsmasq
 part, which should make it way more convinient for most people. It'd also
 make the mapaddress option in the torrc obsolete, I think.

 Further things to consider:
  * Security implications?
  * Does something like libnss exist for other operating systems, too?

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6228>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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