2016-10-30 01:02:58 +02:00
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
< html xmlns = "http://www.w3.org/1999/xhtml" >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" / >
2017-03-18 23:56:08 +01:00
< title > How to protect an instance — searx 0.11.0 documentation< / title >
2016-10-30 01:02:58 +02:00
< link rel = "stylesheet" href = "../_static/style.css" type = "text/css" / >
< link rel = "stylesheet" href = "../_static/pygments.css" type = "text/css" / >
< script type = "text/javascript" >
var DOCUMENTATION_OPTIONS = {
URL_ROOT: '../',
2017-03-18 23:56:08 +01:00
VERSION: '0.11.0',
2016-10-30 01:02:58 +02:00
COLLAPSE_INDEX: false,
FILE_SUFFIX: '.html',
HAS_SOURCE: true
};
< / script >
< script type = "text/javascript" src = "../_static/jquery.js" > < / script >
< script type = "text/javascript" src = "../_static/underscore.js" > < / script >
< script type = "text/javascript" src = "../_static/doctools.js" > < / script >
< link rel = "index" title = "Index" href = "../genindex.html" / >
< link rel = "search" title = "Search" href = "../search.html" / >
2017-03-18 23:56:08 +01:00
< link rel = "top" title = "searx 0.11.0 documentation" href = "../index.html" / >
2016-10-30 01:02:58 +02:00
< link rel = "next" title = "Development Quickstart" href = "../dev/quickstart.html" / >
< link rel = "prev" title = "Administration API" href = "api.html" / >
< link media = "only screen and (max-device-width: 480px)" href = "../_static/small_flask.css" type = "text/css" rel = "stylesheet" / >
< meta name = "viewport" content = "width=device-width, initial-scale=0.9, maximum-scale=0.9" >
< / head >
< body role = "document" >
< div class = "document" >
< div class = "documentwrapper" >
< div class = "bodywrapper" >
< div class = "body" role = "main" >
< div class = "section" id = "how-to-protect-an-instance" >
< h1 > How to protect an instance< a class = "headerlink" href = "#how-to-protect-an-instance" title = "Permalink to this headline" > ¶< / a > < / h1 >
< p > Searx depens on external search services. To avoid the abuse of these services it is advised to limit the number of requests processed by searx.< / p >
< p > An application firewall, < code class = "docutils literal" > < span class = "pre" > filtron< / span > < / code > solves exactly this problem. Information on how to install it can be found at the < a class = "reference external" href = "https://github.com/asciimoo/filtron" > project page of filtron< / a > .< / p >
< div class = "section" id = "sample-configuration-of-filtron" >
< h2 > Sample configuration of filtron< a class = "headerlink" href = "#sample-configuration-of-filtron" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > An example configuration can be find below. This configuration limits the access of< / p >
< blockquote >
< div > < ul class = "simple" >
< li > scripts or applications (roboagent limit)< / li >
< li > webcrawlers (botlimit)< / li >
< li > IPs which send too many requests (IP limit)< / li >
< li > too many json, csv, etc. requests (rss/json limit)< / li >
< li > the same UserAgent of if too many requests (useragent limit)< / li >
< / ul >
< / div > < / blockquote >
< div class = "code json highlight-default" > < div class = "highlight" > < pre > < span > < / span > < span class = "p" > [< / span >
< span class = "p" > {< / span >
< span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " search request" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " filters" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s2" > " Param:q" < / span > < span class = "p" > ,< / span > < span class = "s2" > " Path=^(/|/search)$" < / span > < span class = "p" > ],< / span >
< span class = "s2" > " interval" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "n" > time< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > sec< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " limit" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "nb" > max< / span > < span class = "o" > -< / span > < span class = "n" > request< / span > < span class = "o" > -< / span > < span class = "n" > number< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " subrules" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span >
< span class = "p" > {< / span >
< span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " roboagent limit" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " interval" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "n" > time< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > sec< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " limit" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "nb" > max< / span > < span class = "o" > -< / span > < span class = "n" > request< / span > < span class = "o" > -< / span > < span class = "n" > number< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " filters" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s2" > " Header:User-Agent=(curl|cURL|Wget|python-requests|Scrapy|FeedFetcher|Go-http-client)" < / span > < span class = "p" > ],< / span >
< span class = "s2" > " actions" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span >
< span class = "p" > {< / span > < span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " block" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " params" < / span > < span class = "p" > :< / span > < span class = "p" > {< / span > < span class = "s2" > " message" < / span > < span class = "p" > :< / span > < span class = "s2" > " Rate limit exceeded" < / span > < span class = "p" > }}< / span >
< span class = "p" > ]< / span >
< span class = "p" > },< / span >
< span class = "p" > {< / span >
< span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " botlimit" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " limit" < / span > < span class = "p" > :< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span >
< span class = "s2" > " stop" < / span > < span class = "p" > :< / span > < span class = "n" > true< / span > < span class = "p" > ,< / span >
< span class = "s2" > " filters" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s2" > " Header:User-Agent=(Googlebot|bingbot|Baiduspider|yacybot|YandexMobileBot|YandexBot|Yahoo! Slurp|MJ12bot|AhrefsBot|archive.org_bot|msnbot|MJ12bot|SeznamBot|linkdexbot|Netvibes|SMTBot|zgrab|James BOT)" < / span > < span class = "p" > ],< / span >
< span class = "s2" > " actions" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span >
< span class = "p" > {< / span > < span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " block" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " params" < / span > < span class = "p" > :< / span > < span class = "p" > {< / span > < span class = "s2" > " message" < / span > < span class = "p" > :< / span > < span class = "s2" > " Rate limit exceeded" < / span > < span class = "p" > }}< / span >
< span class = "p" > ]< / span >
< span class = "p" > },< / span >
< span class = "p" > {< / span >
< span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " IP limit" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " interval" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "n" > time< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > sec< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " limit" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "nb" > max< / span > < span class = "o" > -< / span > < span class = "n" > request< / span > < span class = "o" > -< / span > < span class = "n" > number< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " stop" < / span > < span class = "p" > :< / span > < span class = "n" > true< / span > < span class = "p" > ,< / span >
< span class = "s2" > " aggregations" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s2" > " Header:X-Forwarded-For" < / span > < span class = "p" > ],< / span >
< span class = "s2" > " actions" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span >
< span class = "p" > {< / span > < span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " block" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " params" < / span > < span class = "p" > :< / span > < span class = "p" > {< / span > < span class = "s2" > " message" < / span > < span class = "p" > :< / span > < span class = "s2" > " Rate limit exceeded" < / span > < span class = "p" > }}< / span >
< span class = "p" > ]< / span >
< span class = "p" > },< / span >
< span class = "p" > {< / span >
< span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " rss/json limit" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " interval" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "n" > time< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > sec< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " limit" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "nb" > max< / span > < span class = "o" > -< / span > < span class = "n" > request< / span > < span class = "o" > -< / span > < span class = "n" > number< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " stop" < / span > < span class = "p" > :< / span > < span class = "n" > true< / span > < span class = "p" > ,< / span >
< span class = "s2" > " filters" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s2" > " Param:format=(csv|json|rss)" < / span > < span class = "p" > ],< / span >
< span class = "s2" > " actions" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span >
< span class = "p" > {< / span > < span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " block" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " params" < / span > < span class = "p" > :< / span > < span class = "p" > {< / span > < span class = "s2" > " message" < / span > < span class = "p" > :< / span > < span class = "s2" > " Rate limit exceeded" < / span > < span class = "p" > }}< / span >
< span class = "p" > ]< / span >
< span class = "p" > },< / span >
< span class = "p" > {< / span >
< span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " useragent limit" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " interval" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "n" > time< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > sec< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " limit" < / span > < span class = "p" > :< / span > < span class = "o" > < < / span > < span class = "nb" > max< / span > < span class = "o" > -< / span > < span class = "n" > request< / span > < span class = "o" > -< / span > < span class = "n" > number< / span > < span class = "o" > -< / span > < span class = "ow" > in< / span > < span class = "o" > -< / span > < span class = "n" > interval< / span > < span class = "o" > > < / span > < span class = "p" > ,< / span >
< span class = "s2" > " aggregations" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span > < span class = "s2" > " Header:User-Agent" < / span > < span class = "p" > ],< / span >
< span class = "s2" > " actions" < / span > < span class = "p" > :< / span > < span class = "p" > [< / span >
< span class = "p" > {< / span > < span class = "s2" > " name" < / span > < span class = "p" > :< / span > < span class = "s2" > " block" < / span > < span class = "p" > ,< / span >
< span class = "s2" > " params" < / span > < span class = "p" > :< / span > < span class = "p" > {< / span > < span class = "s2" > " message" < / span > < span class = "p" > :< / span > < span class = "s2" > " Rate limit exceeded" < / span > < span class = "p" > }}< / span >
< span class = "p" > ]< / span >
< span class = "p" > }< / span >
< span class = "p" > ]< / span >
< span class = "p" > }< / span >
< span class = "p" > ]< / span >
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "route-request-through-filtron" >
< h2 > Route request through filtron< a class = "headerlink" href = "#route-request-through-filtron" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > Filtron can be started using the following command:< / p >
< div class = "code bash highlight-default" > < div class = "highlight" > < pre > < span > < / span > $ filtron -rules rules.json
< / pre > < / div >
< / div >
< p > It listens on 127.0.0.1:4004 and forwards filtered requests to 127.0.0.1:8888 by default.< / p >
< p > Use it along with < code class = "docutils literal" > < span class = "pre" > nginx< / span > < / code > with the following example configuration.< / p >
< div class = "code bash highlight-default" > < div class = "highlight" > < pre > < span > < / span > location / {
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Scheme $scheme;
proxy_pass http://127.0.0.1:4004/;
}
< / pre > < / div >
< / div >
< p > Requests are coming from port 4004 going through filtron and then forwarded to port 8888 where a searx is being run.< / p >
< / div >
< / div >
< / div >
< / div >
< / div >
< div class = "sphinxsidebar" role = "navigation" aria-label = "main navigation" >
< div class = "sphinxsidebarwrapper" > < div class = "sidebar_container body" >
< h1 > Searx< / h1 >
< ul >
< li > < a href = "../index.html" > Home< / a > < / li >
< li > < a href = "https://github.com/asciimoo/searx" > Source< / a > < / li >
2017-05-12 22:51:48 +02:00
< li > < a href = "../blog/blog.html" > Blog< / a > < / li >
2016-10-30 01:02:58 +02:00
< li > < a href = "https://github.com/asciimoo/searx/wiki" > Wiki< / a > < / li >
< li > < a href = "https://github.com/asciimoo/searx/wiki/Searx-instances" > Public instances< / a > < / li >
< / ul >
< hr / >
< ul >
< li > < a href = "https://twitter.com/Searx_engine" > Twitter< / a > < / li >
< li > < a href = "https://flattr.com/submit/auto?user_id=asciimoo&url=https://github.com/asciimoo/searx&title=searx&language=&tags=github&category=software" > Flattr< / a > < / li >
< li > < a href = "https://gratipay.com/searx" > Gratipay< / a > < / li >
< / ul >
< / div >
< / div >
< / div >
< div class = "clearer" > < / div >
< / div >
< div class = "footer" >
© Copyright 2015-2016, Adam Tauber.
< / div >
< / body >
< / html >
