How To Install and Configure OpenLDAP and phpLDAPadmin on an Ubuntu 14.04 Server | DigitalOcean

Install phpLDAPadmin to Manage LDAP with a Web Interface

Although it is very possible to administer LDAP through the command line, most users will find it easier to use a web interface. We’re going to install phpLDAPadmin, which provides this functionality, to help remove some of the friction of learning the LDAP tools.

The Ubuntu repositories contain the phpLDAPadmin package. You can install it by typing:

sudo apt-get install phpldapadmin

This should install the administration interface, enable the necessary Apache virtual hosts files, and reload Apache.

The web server is now configured to serve your application, but we will make some additional changes. We need to configure phpLDAPadmin to use the domain schema we configured for LDAP, and we are also going to make some adjustments to secure our configuration a little bit.

Configure phpLDAPadmin

Now that the package is installed, we need to configure a few things so that it can connect with the LDAP directory structure that was created during the OpenLDAP configuration stage.

Begin by opening the main configuration file with root privileges in your text editor:

sudo nano /etc/phpldapadmin/config.php

In this file, we need to add the configuration details that we set up for our LDAP server. Start by looking for the host parameter and setting it to your server’s domain name or public IP address. This parameter should reflect the way you plan on accessing the web interface:


Next up, you’ll need to configure the domain name you selected for your LDAP server. Remember, in our example we selected We need to translate this into LDAP syntax by replacing each domain component (everything not a dot) into the value of a dc specification.

All this means is that instead of writing, we will write something like dc=test,dc=com. We should find the parameter that sets the server base parameter and use the format we just discussed to reference the domain we decided on:


We need to adjust this same thing in our login bind_id parameter. The cn parameter is already set as “admin”. This is correct. We just need to adjust the dc portions again, just as we did above:


The last thing that we need to adjust is a setting that control the visibility of warning messages. By default phpLDAPadmin will throw quite a few annoying warning messages in its web interface about the template files that have no impact on the functionality.

We can hide these by searching for the hide_template_warning parameter, uncommenting the line that contains it, and setting it to “true”:

$config->custom->appearance['hide_template_warning'] = true;

This is the last thing that we need to adjust. You can save and close the file when you are finished.

Create a Password Authentication File

We also want to password protect our phpLDAPadmin location. Even though phpLDAPadmin has password authentication, this will provide an extra level of protection.

The utility that we need is contained in an Apache utility package. Get it by typing:

sudo apt-get install apache2-utils

Now that you have the utility available, you can create a password file that will contain a username that you choose and the associated hashed password.

We will keep this in the /etc/apache2 directory. Create the file and specify the username you want to use by typing:

sudo htpasswd -c /etc/apache2/htpasswd demo_user

Now, we are ready to modify Apache to take advantage of our security upgrades.

Secure Apache

The first thing we should do is enable the SSL module in Apache. We can do this by typing:

sudo a2enmod ssl

This will enable the module, allowing us to use it. We still need to configure Apache to take advantage of this though.

Currently, Apache is reading a file called 000-default.conf for regular, unencrypted HTTP connections. We need to tell it to redirect requests for our phpLDAPadmin interface to our HTTPS interface so that the connection is encrypted.

When we redirect traffic to use our SSL certificates, we’ll also implement the password file to authenticate users. While we’re modifying things, we’ll also change the location of the phpLDAPadmin interface itself to minimize targeted attacks.

Modify the phpLDAPadmin Apache Configuration

The first thing we will do is modify the alias that is set up to serve our phpLDAPadmin files.

Open the file with root privileges in your text editor:

sudo nano /etc/phpldapadmin/apache.conf

This is the place where we need to decide on the URL location where we want to access our interface. The default is /phpldapadmin, but we want to change this to cut down on random login attempts by bots and malicious parties.

For this guide, we’re going to use the location /superldap, but you should choose your own value.

We need to modify the line that specifies the Alias. This should be in an IfModule mod_alias.c block. When you are finished, it should look like this:

<IfModule mod_alias.c>
    Alias /superldap /usr/share/phpldapadmin/htdocs

When you are finished, safe and close the file.

Configure the HTTP Virtual Host

Next, we need to modify our current Virtual Hosts file. Open it with root privileges in your editor:

sudo nano /etc/apache2/sites-enabled/000-default.conf

Inside, you’ll see a rather bare configuration file that looks like this:

<VirtualHost *:80>
    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/html
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

We want to add information about our domain name or IP address to define our server name and we want to set up our redirect to point all HTTP requests to the HTTPS interface. This will match the alias we configured in the last section.

The changes we discussed will end up looking like this. Modify the items in red with your own values:

<VirtualHost *:80>
    ServerAdmin webmaster@server_domain_or_IP
    DocumentRoot /var/www/html
    ServerName server_domain_or_IP
    Redirect permanent /superldap https://server_domain_or_IP/superldap
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

Save and close the file when you are finished.

Source: How To Install and Configure OpenLDAP and phpLDAPadmin on an Ubuntu 14.04 Server | DigitalOcean

How To Install and Configure OpenLDAP and phpLDAPadmin on an Ubuntu 14.04 Server | DigitalOcean was last modified: April 30th, 2020 by Jovan Stosic

What are CSS Modules and why do we need them?

What does this look like and why do it? We’ll get to that in a sec. First, remember how HTML and CSS normally work. A class is applied in HTML:

<h1 class="title">An example heading</h1>

And that class is styled in CSS:

.title {
  background-color: red;

As long as that CSS is applied to the HTML document, the background of that <h1> would be red. We don’t need to process the CSS or the HTML. The browser understands both those file formats.

Source: What are CSS Modules and why do we need them? | CSS-Tricks

What are CSS Modules and why do we need them? was last modified: April 29th, 2020 by Jovan Stosic