Remove permanent redirect (HTTP 301) cache in Firefox

As a web developer configuring SSL certificates on websites you deliver, as we do, you might be faced, one day, with a small issue about configuring a 301 redirect from HTTP to HTTPS that has to be reverted. It so…

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SSL certificates for multiple virtual hosts: problem on IE for Windows XP

Using a single server for multiple virtual hosts is something that comes naturally nowadays for any web server sysadmin. Using SSL certificates is also common (particularly so since the infamous Blacksheep extension for Firefox as published a few years back)….

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Apache Rewrite Cheatsheet

This is the life-saver cheatsheet you need if you’re ever going to want to understand complex rewrite rules like the ones generated by the Boost module in Drupal: http://www.askapache.com/htaccess/mod_rewrite-variables-cheatsheet.html In particular, in  RewriteRule .* – [S=5], the [S=5] rule means…

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Renew expired self-signed SSL certificate

For some reason, it might be very difficult to find information on how to renew a self-signed certificate. This is a nice (and short) explanation: http://linux.togaware.com/survivor/Renew_SSL.html. Please note that a .pem file is in fact (as you can guess from…

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Debunking error (OS 10054) core_output_filter: writing data to the network

One of our customers has Apache logs (Xampp-based) full of this line: [Tue Mar 02 16:21:41 2010] [info] [client 172.20.99.16] (OS 10054)Une connexion existante a dû être fermée par l’hôte distant.  : core_output_filter: writing data to the network Sometimes (OS10053)…

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Howto setup a 301 redirect

A few links to setup 301 Permanent Redirect (302 follows the same logic but is for Temporary Redirect) in Apache: http://www.askdavetaylor.com/how_do_i_add_a_301_redirect_to_my_apache_httpdconf.html http://www.webconfs.com/how-to-redirect-a-webpage.php http://www.stepforth.com/resources/web-marketing-knowledgebase/non-www-redirect One thing worth attention is the SEO-friendly redirection of non-www traffic to www. This means that if…

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Webalizer installation and use on Debian

This is a simple guide on how to install Webalizer on a Debian system equipped with Apache. This should work for every version of every three elements (Debian, Apache and Webalizer) all together. Webalizer is a statistics application which analyses…

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PHP

“PHP (recursive acronym for “PHP: Hypertext Preprocessor”) is a widely-used Open Source general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.” See www.php.net. Using PHP is a matter of precision. ASP can be…

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How to configure HTTPS on Apache 2

Introduction Setting up several VirtualHost’s on an Apache2 server is easy. Setting up several VirtualHost’s on an Apache 2 server, some of them using SSL (HTTPS) is considerably less easy. The main problem is the documentation, not really easy to…

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HOWTO Authenticate access to parts of webserver using PAM and Apache

This article is incomplete and was first written in June 2006 for the BeezNest technical website (http://glasnost.beeznest.org/articles/337). To require authentication of parts of a webserver using PAM and Apache. That way, you can require a user or users of a…

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