Articles by Croydon
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How to Migrate ISPConfig 2, ISPConfig 3.x, Confixx, CPanel or Plesk to ISPConfig 3.2 (single server)
Author: Croydon • Tags: commercial, ispconfig • Comments: 93 • Updated: Feb 08, 2024In this howto, we'll show how to use the ISPConfig Migration Tool 2.0 to migrate a single server to a new ISPConfig 3.1 server. The Migration tool is part of the ISPConfig Migration toolkit. The Migration Tool supports ISPConfig 2 and 3 – 3.1, Plesk 10 – 12.5, Plesk Onyx, CPanel and Confixx 3 as source servers and ISPConfig 3.1 as target server.
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Secure WordPress Against Fake and Disposable Email Spam
Author: Croydon •
Tags: linux, web server •
Comments: 1 In this howto, we'll show how to use the Fiddlemail Wordpress plugin to secure your Wordpress installation against the usage of disposable email addresses (also known as fake or trash mail addresses).
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How to setup virtual containers with LXC and quota support on Debian 8
Author: Croydon •
Tags: debian, linux, virtualization •
Comments: 4 Quota support is an often requested feature in lxc. Linux filesystem quota is required when you want to give multiple users access to a container and want to control that one user is not using all the disk space. Quota is also required for web hosting servers, e.g. with ISPConfig 3, for the same reason: one website shall not be able to fill up the whole disk. This howto shows you, how you can use lxc with hard disk quota using qemu nbd with a qcow image file on Debian 8.
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PHP number_format() and a problem with negative values rounded to zero
Author: Croydon •
Tags: php •
Comments: 1 PHP number_format() and a problem with negative values rounded to Zero As is known, the PHP function number_format() rounds the given value to the needed amount of decimal places.
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Improve Spam abuse protection in dovecot by restricting access to mail accounts by IP address (e. g. with ISPConfig 3)
Author: Croydon •
Tags: postfix, antivirus, debian, fedora, suse, ubuntu, centos, email •
Comments: 4 Improve Spam abuse protection in dovecot by restricting access to mail accounts by IP address (e. g. with ISPConfig 3) This howto will show you how to add ip restrictions to single mail accounts when using dovecot with MySQL. This is especially useful if you need to access a mail account from only one single ip or a few ips or if you want to block specific ip addresses from accessing the mail account (e. g. due to spam abuse).
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PHP session data is not deleted when using custom session management on debian (and ubuntu)
Author: Croydon •
Tags: apache, php •
Comments: 0 PHP session data is not deleted when using custom session management on debian (and ubuntu) On debian systems (as far as I know this applies to ubuntu, too) the garbage collector for PHP sessions is disabled by default. The corresponding setting in php.ini is session.gc_probability = 0 which enables the garbage collector when set to something greater than zero. The default value in PHP is 1, so the garbage collector is called with a probability of 1/100 at each PHP script call. On debian systems this setting is disabled because of the fact that the default path for session storage is not writable for the web server process (and it shouldn't be either). Deleting of outdates session files is done by a system cron job here.
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Rounding numbers to special values in PHP - e. g. "nice prices"
Author: Croydon •
Tags: php, web server •
Comments: 0 Rounding numbers to special values in PHP - e. g. "nice prices" Sometimes you need to round numbers to special values. Maybe you have a shop and want to calculate your selling prices automatically, but you don't like prices like 12.52 USD. Here's a small PHP function that can be used in many different ways to solve this problem.
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Using Pydio In An ISPConfig 3 Multiserver Installation
Author: Croydon •
Tags: ftp, debian, control panels, ispconfig •
Comments: 26 Using Pydio In An ISPConfig 3 Multiserver Installation This howto shows you, how you can use pydio (formerly Ajaxplorer) in a multi-server installation of ISPConfig 3.
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How To Find Outdated Wordpress Versions On Your Server To Reduce The Risk Of Being Hacked
Author: Croydon • Tags: linux, php, security • Comments: 9How To Find Outdated Wordpress Versions On Your Server To Reduce The Risk Of Being Hacked Today we want to tell you how to find outdated Wordpress installations on your server. This can be of high risk, especially for shared hosting servers. Being attacked on massively used open source software like Wordpress is only a matter of time, once security exploits get published.
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How to find outdated joomla versions on your server to reduce the risk of being hacked
Author: Croydon • Tags: linux, security, debian, fedora, suse, ubuntu, centos, linux, security • Comments: 7Today I want to focus on a topic that can lead to huge problems of hacked accounts, spam mailings etc.: Outdated Joomla installations on your server. Of course, this is valid for other software, too. The mentioned method should work in a similar way for other software. Since Joomla is widely spread throughout the internet, especially on shared hosting systems CMS (Content Management System), this howto will only cover Joomla so far.
