The entire world relates to some network capabilities in some way or the other. The data transmission on the network is getting more straightforward and quicker. An intrusion detection system helps distinguish unauthorized activities or intrusions that may settle the confidentiality, integrity, or availability of a resource. Nowadays, almost all institutions are using network-related facilities like schools, banks, offices, etc. Social media has become so popular that nearly every individual belongs to a new nation called ‘Netizen.’ Several approaches have been implemented to incorporate security features in network-related issues. However, vulnerable attacks are continuous, so intrusion detection systems have been proposed to secure computer systems and networks. Network security is a piece of the most fundamental issues in Computer Network Management. Moreover, an intrusion is considered to be the most revealed dangers to security. With the evolution of the networks, intrusion detection has emerged as a crucial field in networks’ security. The main aim of this article is to deliver a systematic review of intrusion detection approaches and systems that are used in various network environments.

整个世界以某种方式与某种网络能力有关。网络上的数据传输变得越来越直接和快捷。入侵检测系统有助于区分可能解决资源的机密性，完整性或可用性的未经授权的活动或入侵。如今，几乎所有机构都在使用与网络有关的设施，例如学校，银行，办公室等。社交媒体变得如此流行，几乎每个人都属于一个称为“网民”的新国家。已经实施了几种方法来将安全功能纳入网络相关问题中。但是，易受攻击的攻击是连续的，因此提出了入侵检测系统来保护计算机系统和网络的安全。网络安全是计算机网络管理中最基本的问题之一。此外，入侵被认为是对安全性最明显的威胁。随着网络的发展，入侵检测已成为网络安全的重要领域。本文的主要目的是对各种网络环境中使用的入侵检测方法和系统进行系统的回顾。