KnowTeBook - Webworkers Daily Milk » Anti-Spam http://www.knowtebook.com A community blog about design, ideas, trends, wordpress & more. Tue, 27 Jul 2010 08:46:19 +0000 http://wordpress.org/?v=9 en Reduce Spam to almost Zero by simple Blocking http://www.knowtebook.com/reduce-spam-to-almost-zero-by-simple-blocking-1105.htm http://www.knowtebook.com/reduce-spam-to-almost-zero-by-simple-blocking-1105.htm#comments Sun, 20 Jul 2008 20:41:41 +0000 Knowtebook http://www.knowtebook.com/?p=1105 Spambots and badly behaving bots seem to be all the rage this year. While it will be very hard to block all of them, you can do a lot to keep most of the comment spammers away from your blog and scrapers from harvesting your site.

Spambots also have to identify as user agents on servers, so that people gathered their “names” in the long run. There are a bunch more, but blocking to many may cause the server to slow down. Here we go. Just follow this simple steps to reduce your spam attacks!

Image by debruehe

Image by debruehe

How to Block SpamBots

  1. Create a .htaccess file in your root directory on your server if you don’t have one already.
  2. Insert the following code
# BLACKLISTED USER AGENTS
SetEnvIfNoCase User-Agent "" keep_out
SetEnvIfNoCase User-Agent "larbin" keep_out
SetEnvIfNoCase User-Agent "heritrix" keep_out
SetEnvIfNoCase User-Agent "ia_archiver" keep_out
SetEnvIfNoCase User-Agent "Jakarta Commons" keep_out
SetEnvIfNoCase User-Agent "Y!OASIS/TEST"    keep_out
SetEnvIfNoCase User-Agent "libwww-perl"     keep_out
SetEnvIfNoCase User-Agent "MOT-MPx220"      keep_out
SetEnvIfNoCase User-Agent "MJ12bot"         keep_out
SetEnvIfNoCase User-Agent "Nutch"           keep_out
SetEnvIfNoCase User-Agent "cr4nk"           keep_out

<Limit GET POST PUT>
order allow,deny
allow from all
deny from env=keep_out
</Limit>

Thats it! Save and upload it to your (apache) server. What do we have done? Every single line stands for blocking a spam bot (like “larbin”), so you maybe noticed the very first line with no spambot in it. ""? That’s right. An empty user agent. If someone can’t be arsed to set a user-agent, why should you serve him anything? Some servers can not handle the empty “”. So if you encounter problems, delete the hole line

SetEnvIfNoCase User-Agent "" keep_out

The last 5 lines just tell the server to block those agents.

Please keep us updated of your experiences or if you have different spambots!

]]> http://www.knowtebook.com/reduce-spam-to-almost-zero-by-simple-blocking-1105.htm/feed Anti-Spam Guide für Webmaster http://www.knowtebook.com/anti-spam-guide-fuer-webmaster-549.htm http://www.knowtebook.com/anti-spam-guide-fuer-webmaster-549.htm#comments Sat, 09 Feb 2008 21:23:21 +0000 Knowtebook http://www.4webworking.de/allgemein/anti-spam-guide-fuer-webmaster/ Spam-Emails überschwemmen das Internet. Um ihre Massenemails unter die Leute zu bringen, benutzen Spammer Adress-Datenbanken, die im Internet für teures Geld gehandelt werden. Oberstes Ziel im Anti-Spam-Kampf sollte es deswegen sein, mit seiner Emailadresse nicht in solchen Datenbanken aufzutauchen.

No Spam
Creative Commons License photo credit: Thomas Hawk

]]> http://www.knowtebook.com/anti-spam-guide-fuer-webmaster-549.htm/feed Cut & Paste Anti-spam email displayer http://www.knowtebook.com/cut-paste-anti-spam-email-displayer-550.htm http://www.knowtebook.com/cut-paste-anti-spam-email-displayer-550.htm#comments Sat, 09 Feb 2008 21:23:21 +0000 Knowtebook http://www.4webworking.de/allgemein/css-anti-spam-email-displayer-tipp/ This is a powerful anti-spam script that lets you display email addresses on your site without spam harvesters being able to pick up on them.

getting creative, one spam at a time=)
Creative Commons License photo credit: TheAlieness GiselaGiardino²³

It is unique in the following ways:

  • Enter email addresses into the script using the simple format “chris[at]whatever[dot]com”. The script will dynamically replace [at] and [dot] at run time for anti spam purposes.
  • Easily display email addresses in 2 different modes: 1) A drop down menu 2) Plain text and email link.
  • Display a list of email addresses, or just one from the list.
  • Pass in an optional CSS classname to easily style the email addresses.
]]> http://www.knowtebook.com/cut-paste-anti-spam-email-displayer-550.htm/feed Domains: urlto - Verfolgung von Links verhindern http://www.knowtebook.com/domains-urlto-verfolgung-von-links-verhindern-672.htm http://www.knowtebook.com/domains-urlto-verfolgung-von-links-verhindern-672.htm#comments Sat, 09 Feb 2008 21:23:21 +0000 Knowtebook http://www.4webworking.de/allgemein/domains-urlto-verfolgung-von-links-verhindern/ Jede Website protokolliert die Herkunft der Besucher mit, d.h. jeder Link von Ihrer Website wird im sogenannten Referrer-Log aufgezeichnet und ist so nachvollziehbar. Mit urlto.de können Sie dies umgehen, denn dem Empfänger wird keine Möglichkeit gegeben die Herkunft des Users einzusehen.

Lock
Creative Commons License photo credit: AMagill

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