Securing your WordPress with chmod 644 and chmod 755 the easy (but pro) way

Let’s say we have a document root like:

It’s interesting to note the instructions for this will vary from environment to environment, it depends on which user is looking after apache2, etc.


Make all files read/write and owned by www-data apache2 user only

root@meine:/var/www/ find . -type f -exec chown apache2:apache2 {} \; 
root@meine:/var/www/ find . -type f -exec chmod 644 {} \;

Make all folders accessible Read + Execute, but no write permissions

root@meine:/var/www/ find . -type d -exec chmod 755 {} \;
root@meine:/var/www/ find . -type d -exec chown apache2:apache2 {} \;


Note debian users, may need to use www-data:www-data instead.

Discovering siteurl variable for WordPress

So I recently read a little piece by one of my colleagues about this. It comes up fairly frequently so it’s worth mentioning. It’s possible to determine the address that wordpress is using as the siteurl by directly querying the database or looking for the value in the sql dump.

Database changed
mysql> SELECT option_name,option_value FROM wp_options WHERE option_name='siteurl';
| option_name | option_value                          |
| siteurl     | |
1 row in set (0.00 sec)

It turns out there is a second ‘home’ page variable in the database:

mysql> SELECT option_name,option_value FROM wp_options WHERE option_name='home';
| option_name | option_value                          |
| home        | |
1 row in set (0.00 sec)

I’m not 100% on the difference between ‘siteurl’ and ‘home’, but guessing the siteurl is the tld definition of the domain, and home is the default landing page for requests to that TLD. As I understand it anyway, I am sure someone will correct me if this isn’t completely correct.

Installing Drupal 8 the hard way

Many people use phpmyadmin, but we’re going to do this properly to add users, databases and privileges. Heres how I did it.
Please note that this is a work in progress and is not finished yet .

Install httpd and mysql-server

yum install httpd mariadb-server php php-mysql

What you might find is that drupal 8 requires php5.5.9 lets install that;

[root@web-test-centos7 html]# yum install centos-release-scl
[root@web-test-centos7 html]# yum install php55-php-mysqlnd

Open Firewall port 80 http for CentOS

     sudo iptables -I INPUT 1 -p tcp --dport 80 -j ACCEPT
     sudo iptables -I INPUT 1 -p tcp --dport 443 -j ACCEPT

Save firewall rules in CentOS

/etc/init.d/iptables save

Alternatively, save firewall rules Ubuntu

iptables-save > /etc/iptables.rules

Save firewall rules for all other distros

iptables-save > /etc/sysconfig/iptables

Connect to MysQL to configure database user ‘drupal’

# mysql -u root
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 3
Server version: 5.5.47-MariaDB MariaDB Server

Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

Create Drupal database

MariaDB [(none)]> create database drupal;

Grant ability to connect with drupal user

MariaDB [(none)]> grant usage on *.* to drupal@localhost identified by '@#@DS45Dfddfdgj334k34ldfk;DF';
Query OK, 0 rows affected (0.00 sec)

Grant all Privileges to the user drupal for database drupal

MariaDB [(none)]> grant all privileges on drupal.* to drupal@localhost;
Query OK, 0 rows affected (0.00 sec)