what is the difference between syslog and syslog-ng
syslog-ng syslog-ng is a free and open-source implementation of the syslog protocol for Unix and Unix-like systems. It extends the original syslogd model with content-based filtering, rich filtering capabilities, flexible configuration options and adds important features to syslog, like using TCP for transport. As of today syslog-ng is developed by Balabit IT Security Ltd. It has two editions with a common codebase. The first is called syslog-ng Open Source Edition (OSE) with the license LGPL. The second is called Premium Edition (PE) and has additional plugins (modules) under a proprietary license.
Dust storm The term sandstorm is used most often in the context of desert sandstorms, especially in the Sahara Desert, or places where sand is a more prevalent soil type than dirt or rock, when, in addition to fine particles obscuring visibility, a considerable amount of larger sand particles are blown closer to the surface. The term dust storm is more likely to be used when finer particles are blown long distances, especially when the dust storm affects urban areas.