Server security

php.ini

PHP settings are defined in:

• a main configuration file, usually found under /etc/php5/php.ini; some distributions provide different configuration environments, e.g.
  • /etc/php5/php.ini - used when running console scripts
  • /etc/php5/apache2/php.ini - used when a client requests PHP resources from Apache
  • /etc/php5/php-fpm.conf - used when PHP requests are proxied to PHP-FPM
• additional configuration files/entries, depending on the installed/enabled extensions:
  • /etc/php/conf.d/xdebug.ini

Locate .ini files

Console environment

$ php --ini
Configuration File (php.ini) Path: /etc/php
Loaded Configuration File:         /etc/php/php.ini
Scan for additional .ini files in: /etc/php/conf.d
Additional .ini files parsed:      /etc/php/conf.d/xdebug.ini

Server environment

• create a phpinfo.php script located in a path supported by the web server, e.g.
  • Apache (with user dirs enabled): /home/myself/public_html/phpinfo.php
  • /var/www/test/phpinfo.php
• make sure the script is readable by the web server user/group (usually, www, www-data or httpd)
• access the script from a web browser

• look at the Loaded Configuration File and Scan this dir for additional .ini files entries

  <?php phpinfo(); ?>

fail2ban

fail2ban is an intrusion prevention framework that reads server (Apache, SSH, etc.) and uses iptables profiles to block brute-force attempts:

• Official website
• Source code

Read Shaarli logs to ban IPs

Example configuration:

• allow 3 login attempts per IP address
• after 3 failures, permanently ban the corresponding IP adddress

/etc/fail2ban/jail.local

[shaarli-auth][](.html)
enabled  = true
port     = https,http
filter   = shaarli-auth
logpath  = /var/www/path/to/shaarli/data/log.txt
maxretry = 3
bantime = -1

/etc/fail2ban/filter.d/shaarli-auth.conf

[INCLUDES][](.html)
before = common.conf
[Definition][](.html)
failregex = \s-\s<HOST>\s-\sLogin failed for user.*$
ignoreregex =