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YaCy

Introduction[edit]

YaCy is a p2p, censorship resistant Libre search engine. It can be configured to crawl the Internet and private intranets. [1]

How-to:[edit]

Install[edit]


1. Check the YaCy key fingerprint.

Before adding the repository, [2] [3] fetch the key and verify [4] the fingerprint. Always check the fingerprint for yourself.

2. Add YaCy apt signing key.

sudo apt-key --keyring /etc/apt/trusted.gpg.d/yacy-pubkey.gpg adv --keyserver hkp://ipv4.pool.sks-keyservers.net:80 --recv-keys 8BD752501CB62448A30EA3EA1F968B3903D886E7

3. Add YaCy repository.

echo 'deb http://debian.yacy.net ./' > /etc/apt/sources.list.d/yacy.list

Update the package lists.

sudo apt-get update

4. Install openjdk-7-jre-headless and yacy.

sudo apt-get install openjdk-7-jre-headless yacy

To read more on managing YaCy, consult the official documentation.

Tor Browser Proxy Exception[edit]

A proxy exception must be configured in Tor Browser to interact with YaCy. Tor Browser blocks communication with localhost to mitigate some fingerprinting attacks. [5] Note that this exception has fingerprinting implications in the event a website actively abuses JavaScript, but it is still far safer than using another browser. [6] To completely mitigate the risk, it is advised to disable scripts globally with the NoScript extension and only permit JavaScript when absolutely necessary; a sensible anonymity practice.

Note: The following steps will no longer be required once Whonix releases a custom Tor Browser for connecting to alternative networks. [7]

Configure Tor Browser to connect to localhost.


In Tor Browser:

  1. Type about:config into the URL bar.
  2. Press Enter
  3. Search for network.proxy.no_proxies_on
  4. Set to 0

Usage[edit]

To access the WebUI, copy 127.0.0.1:8090 into the URL bar of Tor Browser and press Enter.

Note: YaCy cannot be integrated with Tor Browser because the official YaCyBar add-on from Mozilla is incompatible with Firefox Quantum and was last updated in 2011. Unless the add-on code is revamped, this option will remain impossible at present.

Development[edit]

SOCKS proxy support is very unlikely in the near-medium term, as the relevant developer ticket has not been updated since 2013, see: http://mantis.tokeek.de/view.php?id=219

Footnotes[edit]


No user support in comments. See Support.

Comments will be deleted after some time. Specifically after comments have been addressed in form of wiki enhancements. See Wiki Comments Policy.


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