The last one is the most versatile for which this article is focused. Snort IDS works in 3 different modes, as sniffer, as packet logger and network intrusion detection system. After 2 decades, IT evolved at geometric progression, security did too and everything is almost up to date, adopting IDS is helpful for every sysadmin. Creating a fully functional Snort environment that reflects a real-world production implementation of the IDS involves installing and configuring quite a few separate tools. The most official research on IDS effectivity is pretty old, from 1998, the same year in which Snort was initially developed, and was carried out by DARPA, it concluded such systems were useless before modern attacks. The instructions that follow assume you have decided to install the latest version of Snort on Windows using the executable installer file available from the Snort website. Additional options are: Suricata, Bro IDS, Security Onion. At this prompt, press 1 to get install pfsense by default. There are several IDS in the market and the best are free, Snort is the most popular, I only know Snort and OSSEC and I prefer OSSEC over Snort because it eats less resources but I think Snort is still the universal one. As the pfSense starts booting, a prompt is displayed with some options and a countdown timer. But most sysadmins don’t scan their own servers to discover weak points as explained with OpenVas or Nessus, nor do they setup honeypots or an Intrusion Detection System (IDS) which is explained below. After setting up any server among the first usual steps linked to security are the firewall, updates and upgrades, ssh keys, hardware devices.
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