This topic is just sharing.
I just setup OCS on my ubuntu server. By default the system does not enable captcha on user registration process. Enable this captcha should prevent auto registration by spam/bootware.
Step by step :
install required modules
sudo apt-get install php5-gd fontconfig
edit configuration file
sudo nano ~./ocs/config.inc.php
[captcha]
edit font source location from
font_location = /usr/share/fonts/truetype/freefont/FreeSerif.ttf
to
font_location = /usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf
cd /usr/share/fonts/
fc-cache
restart your apache
sudo service apache2 restart
if you want to use FreeSerif.ttf of another font, you can download from here then send over file transfer to your server.
my registration form with captcha
