Comparative study and analysis of network intrusion detection tools

Security has a significant influence in network management. One of the most common way to secure information in the computer from malicious use is IDS Intrusion detection system(IDS) is most prominent to secure a computer and network against intrusion. IDSs primarily intended to preserve the availability, confidentiality and Integrity(CAI)of network and computer. IDS can be broadly classified in two categories: Network intrusion detection system (NIDS) and Host intrusion detection system(HIDS). NIDS is main part of any network security architecture, which monitors network traffic for predefined suspicious activity or patterns and alert system administrators. Nowadays, many IDSs tools are available such as commercial as well as open source tools. Open source tools promotes a global access through free license. In paper we found study of three popular NIDS tools : Snort, Suricata, Bro.