op5 Logserver Components
Syslog-ng
Syslog-ng is the component that receives and stores syslog data.
If you want to know more about syslog-ng, have a look at:
PostgreSQL
In op5 LogServer all data is stored in a PostgreSQL database for a limited amount of time, for easy access from the web interface and rotated to disk after a configurable amount of time.
Apache Web Server with PHP
The web interface is written in PHP and served by an Apache web server.