{"id":4389,"date":"2017-01-06T23:17:16","date_gmt":"2017-01-06T15:17:16","guid":{"rendered":"https:\/\/www.darknet.org.uk\/?p=4389"},"modified":"2016-12-31T19:26:24","modified_gmt":"2016-12-31T11:26:24","slug":"exitmap-tor-exit-relay-scanner","status":"publish","type":"post","link":"https:\/\/www.darknet.org.uk\/2017\/01\/exitmap-tor-exit-relay-scanner\/","title":{"rendered":"Exitmap &#8211; Tor Exit Relay Scanner"},"content":{"rendered":"<p>Exitmap is a fast and modular Python-based Tor exit relay scanner. Exitmap modules implement tasks that are run over (a subset of) all exit relays. If you have a background in functional programming, think of exitmap as a map() interface for Tor exit relays.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2016\/12\/Exitmap-Tor-Exit-Relay-Scanner-640x400.png\" alt=\"Exitmap - Tor Exit Relay Scanner\" width=\"640\" height=\"400\" class=\"aligncenter size-medium wp-image-4390\" srcset=\"https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2016\/12\/Exitmap-Tor-Exit-Relay-Scanner-640x400.png 640w, https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2016\/12\/Exitmap-Tor-Exit-Relay-Scanner-1024x640.png 1024w, https:\/\/www.darknet.org.uk\/wp-content\/uploads\/2016\/12\/Exitmap-Tor-Exit-Relay-Scanner.png 1280w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>Modules can perform any TCP-based networking task; fetching a web page, uploading a file, connecting to an SSH server, or joining an IRC channel.<\/p>\n<p>In practice, exitmap is useful to monitor the reliability and trustworthiness of exit relays. Mainly, the team use exitmap to check for false negatives on the Tor Project&#8217;s check service and to find malicious exit relays.<\/p>\n<h3>Features<\/h3>\n<p>Exitmap comes with the following modules:<\/p>\n<ul>\n<li>testfds: Tests if an exit relay is able to fetch the content of a simple web page. If an exit relay is unable to do that, it might not have enough file descriptors available.<\/li>\n<li>checktest: Attempts to find false negatives in the Tor Project&#8217;s check service.<\/li>\n<li>dnspoison: Attempts to resolve several domains and compares the received DNS A records to the expected records.<\/li>\n<li>dnssec: Detects exit relays whose resolver does not validate DNSSEC.<\/li>\n<li>patchingCheck: Checks for file tampering.<\/li>\n<li>cloudflared: Checks if a web site returns a CloudFlare CAPTCHA.<\/li>\n<li>rtt: Measure round-trip times through an exit to various destinations.<\/li>\n<\/ul>\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3033787195489589\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- Darknet Responsive Post Ad Links [previously link ad unit] -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3033787195489589\"\r\n     data-ad-slot=\"5456620019\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<h3>Running exitmap<\/h3>\n<p>The only argument exitmap requires is the name of a module. For example, you can run exitmap with the checktest module by running:<\/p>\n<pre>$ .\/bin\/exitmap checktest<\/pre>\n<p>The command line output will then show you how Tor bootstraps, the output of the checktest module, and a scan summary. If you don&#8217;t need three hops and prefer to use two hops with a static first hop, run:<\/p>\n<pre>$ .\/bin\/exitmap --first-hop CCEF02AA454C0AB0FE1AC68304F6D8C4220C1912 checktest<\/pre>\n<p>To run the same test over German exit relays only, execute:<\/p>\n<pre>$ .\/bin\/exitmap --country DE --first-hop CCEF02AA454C0AB0FE1AC68304F6D8C4220C1912 checktest<\/pre>\n<p>If you want to pause for five seconds in between circuit creations to reduce the load on the Tor network and the scanning destination, run:<\/p>\n<pre>$ .\/bin\/exitmap --build-delay 5 checktest<\/pre>\n<p>You can download exitmap here:<\/p>\n<p><a href=\"https:\/\/github.com\/NullHypothesis\/exitmap\/archive\/v2016.04.21.zip\">exitmap-v2016.04.21.zip<\/a><\/p>\n<p>Or read more <a href=\"https:\/\/github.com\/NullHypothesis\/exitmap\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Exitmap is a fast and modular Python-based Tor exit relay scanner. Exitmap modules implement tasks that are run over (a subset of) all exit relays. If you have a background in functional programming, think of exitmap as a map() interface for Tor exit relays. Modules can perform any TCP-based networking task; fetching a web page, [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"Exitmap is a fast and modular Python-based scanner for Tor exit relays. Exitmap modules implement tasks that are run over (a subset of) all exit relays.","_seopress_robots_index":"","_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[5,17],"tags":[308],"featured_image_src":null,"featured_image_src_square":null,"author_info":{"display_name":"Darknet","author_link":"https:\/\/www.darknet.org.uk\/author\/darknet\/"},"_links":{"self":[{"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/posts\/4389"}],"collection":[{"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/comments?post=4389"}],"version-history":[{"count":0,"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/posts\/4389\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/media?parent=4389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/categories?post=4389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.darknet.org.uk\/wp-json\/wp\/v2\/tags?post=4389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}