FileZilla FTP-client retrieve directory listing failed on MLSD command using TLS

Some week ago FileZilla released a new version – 3.10.0.1. After installing this version some clients had problems connecting with their web hosting servers using FTP. One of the changes in FileZilla was that it now defaults to TLS encrypted connections if the server supports it, which many web hosting providers do.

However, if the FTP server is not properly configured together with it’s firewall the client will connect but fail to retrieve the directory listing (timeout).

A workaround on the client side is to connect with plain old FTP using no encryption. To do this in the later versions of FileZilla you must create a connection in the site manager and select plain FTP (unsecure) in the encryption field. (This option is not availible in the quick connect.)

A better solution is to solve the problem on the server side. To do this the FTP server must be configured to use a specific range of ports for passive mode and allowing traffic to them through the server firewall. The example below shows how to do this with pure-ftpd and iptables. In the example we setup pure-ftpd to use ports 50000-55000 for passive transfers and then we allow the same range in iptables.

echo “50000 55000″ > /etc/pure-ftpd/conf/PassivePortRange
/etc/init.d/pure-ftpd restart

Then add the following to your iptables rules and reload them:

iptables -I INPUT -p tcp -m tcp –dport 50000:55000 -j ACCEPT

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Posted by on January 22nd, 2015 No Comments

Convert Microsoft Outlook PST email to IMAP without Outlook

A client was going to stop using Microsoft Outlook and Exchange server and move their email to an ordinary web hosting company using IMAP. The client was downscaling and had no use of the benefits of Microsoft Exchange like shared contacts and calendars. They where just using it for email which could be obtained much cheaper by using the IMAP account at their web hosting provider.

So I was faced with the task of converting their old email contained in PST files. They had already shut down their Exchange server and I could not use the Outlook program. I just had the PST files that where exported before the server shutdown and needed them imported into the IMAP account without using Outlook as it was not availible for me.

This is how I solved it.

Tools used:

  1. Download and install Thunderbird. Set it up with the target email account both as an IMAP account and a POP3 account (it was a problem importing the converted eml files directly to the IMAP account so I had to import them to the POP3 account which is stored locally and then drag them over to the IMAP account, more about that later on). Make sure you setup the POP3 account to leave mail on server and not delete mail when deleted locally.
  2. Download the ImportExportTools extension for Thunderbird. Drag the downloaded file onto Thunderbird in the task bar to install it.
  3. Download the free trial of the SysTools PST converter and install it. The free version is limited to 25 emails per folder so if you have more emails you need to purchase it ($49 when writing this article). You can make a test run with the free version so you see everything works before you go on and buy it.
  4. Run the SysTools PST converter.
  5. Click the Add file button and select your PST file.
  6. Click the Export button and select EML format, and check the folders you wish to export (normally the top folder). Enter a target folder. Then click the Export button.
  7. In Thunderbird, right click the POP3 email account and select New folder and call it “From PST” for example.
  8. Select the “From PST” folder and go to the menu icon in Thunderbird and select Tools -> ImportExport-tools -> Import all EML from a folder -> and it’s subfolders. Select the top folder of your email export in step 6 and click Select folder.
  9. All subfolder and it’s email should now turn up in the “From PST” folder. Now drag the “From PST” folder from the POP3 account to the IMAP account in Thunderbird.
  10. Finally delete the POP3 account in Thunderbird.
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Posted by on January 20th, 2015 No Comments

Akeeba Backup for WordPress Internal Server Error 500 XHR ReadyState: 4

I experienced this error when trying to run a backup on a site hosted at the One.com provider.

The solution is to manually adjust the JPA part size for split archives. Even if the configuration wizard had been used, it didn’t work.

  1. Go to Akeeba Backup -> Settings
  2. Scroll down to Archiver engine where JPA is selected.
  3. Click on the Configure button to the right of JPA.
  4. In my case the Part Size for split archives was set to over 2 GB. I lowered it until it worked, which for me was 100 MB.
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Posted by on January 16th, 2015 No Comments

Change sorting / position of products in PrestaShop featured section on the start page

  1. In the PrestaShop backoffice (admin), go to Catalog -> Products
  2. Above the product list, tick the “Filter by category”
  3. Select the “Home” category in the category list that drops down under the “Filter by category”
  4. Now far to the right you will find a “Position” column where you can use the arrows to move the products up and down
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Posted by on January 4th, 2015 No Comments

Extend a wrapped div to full screen width outside it’s wrapper

A very common design model for websites in fluid/reponsive design is to make a centered container taking up for example 80% of the screen width. It is not very unusual that the designer then wants the background on a header, footer, horizontal menu or any other similar object to have it’s background extended to the fulls screen width.

 

Website with wrapper container

Website with wrapper container

The problem with this quickly becomes pretty obvious as all objects are contained in a 80% wrapper. One solution is of course to close the wrapping container, then create a full width object with the background and the begin a new wrapper.

However, there is a neat trick that can be used to make an object “break out” outside the containing wrapper. It is done by using negative margins. To not get a horizontal scrollbar in the browser we add overflow-x: hidden to the body.

This is an example how to do it (click here to view the example live):

<html>
<head>
<style>
 body {
   overflow-x: hidden; /* to prevent horizontal scroll bars */
 }
 .container {
   width: 80%;
   height: 100%;
   margin-left: auto; /* center the container */
   margin-right: auto;
   padding: 10px; /* some padding inside the container */
   background-color: yellow;
 }
 .divider {
   line-height: 30px;
   background-color: grey;
   color: white;
   margin-left: -1000%;
   margin-right: -1000%;
   padding-left: 1000%; /* push content back in on the screen */
   padding-right: 1000%;
 }
</style>
</head>
<body>
<div class="container">
 <p>Some text inside the container</p>
 <div class="divider">Here is a section divider in full width</div>
</div>
</body>
</html>
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Posted by on December 3rd, 2014 No Comments

Centering a horizontal bullet list

Horizontal bullet lists are often used to create a horizontal menu. This is how to make the horizontal bullet list centered.

  1. Create a <div> container and set the text-align: center style on it.
  2. Create a <ul> <li> inside the div and set display: inline-block style on it.

This is an example of how it is done:

<html>
<head>
  <style type="text/css">
   div#container {
     text-align: center; /* center the horisontal list */
   }
   ul.list {
     list-style: none; /* no bullets */
     display: inline-block; /* this will cause the list to be centered */
   }
   ul.list li {
     float: left; /* horizontal list */
     margin-left: 10px; /* some space between items */
     margin-right: 10px;
   }
  </style>
</head>
<body>
<div id="container">
 <ul class="list">
   <li>Item 1</li>
   <li>Item 2</li>
   <li>Item 3</li>
 </ul>
</div>
</body>
</html>
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Posted by on November 23rd, 2014 No Comments

QNAP TS-420 web interface not accessible over SSL

After a reboot the web interface on a QNAP TS-420 NAS was not accessible over SSL. A nmap showed the NAS was not listening on the SSL port and it was configured to force SSL connections over the standard 443 SSL-port. So trying to access it over the non-SSL port just directed me to https://<ip-address of the nas> where there was no response.

To be able to access the web interface over the non-SSL port 8080 i had to ssh into the NAS using the admin account, then I issued the following commands:

/sbin/setcfg SYSTEM "Force SSL" 0
/etc/init.d/thttpd.sh restart

After this it was possible to access the NAS web interface over the non-SSL port, i. e. http://<ip-address of the nas>:8080

 

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Posted by on November 21st, 2014 1 Comment

Start embedded Youtube video at specific time

When you share a video on Youtube you can select to start the shared video at a certain point of time in the video. Like this (selected to start at 0:40).

Youtube share with start at

This option however is not availible when embedding a video. It can be solved manually though. The embed code from Youtube looks something like this:

<iframe width=”560″ height=”315″ src=”//www.youtube.com/embed/6bHSP9Ddw5w” frameborder=”0″ allowfullscreen></iframe>

To start the video from a specific time, you add the ?start=XXX where XXX is the point counted in seconds. So if the start time includes minutes you have to convert into seconds. If I want the embedded video to start at 0:40 I add ?start=40 like this:

<iframe width=”560″ height=”315″ src=”//www.youtube.com/embed/6bHSP9Ddw5w?start=40” frameborder=”0″ allowfullscreen></iframe>

This is the embedded video starting at 0:40 (and yes, that is me reverse driving an articulated 18 meter bus – sometimes, when I’m not busy ruling Nerdia or working as an IT consultant I walk out into the real world where I sometimes work as a bus driver and it is great fun! :)):

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Posted by on October 21st, 2014 No Comments

Error 404 when trying to password protect administrator folder in Joomla using Apache htaccess

When protecting the administrator folder in Joomla using Apache htaccess to increase the security of the website (which by the way is a good thing to do to prevent too interested individuals to peek where they shouldn’t), you might get an error 404 message when trying to access administrator and the expected password prompt never appears.

The cause can be that the server is configured to allow user defined error pages stored in for example the error folder. If some of the error files are missing the above mentioned problem can occur. Make sure you have the correct folder name and file names for your error files.

This particular problem occured for me when I moved a Joomla site from one hosting provider to another and by mistake also replaced the error folder with the one from the old hosting provider which had a completely different file name structure for the error message files.

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Posted by on October 6th, 2014 No Comments

Ubuntu 12.04 hangs in different stages of the boot sequence

A server I am maintaining stopped during boot on the "Stopping userspace bootsplash" or "Configuring network interfaces". If Ctrl-Alt-Del was pressed the machine rebooted so it was not completely stuck. I tried booting in rescue mode and checked the /etc/network/interfaces syntax but no problem visible there.

The solution was quite simple. Boot in rescue mode and select package repair. After repairing my packages the machine was rebooted, then fsck was ran automatically (which took quite a while). After that the machine booted normally.

 

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Posted by on September 24th, 2014 No Comments