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近年来,网络所面临的安全问题越来越复杂,安全威胁正在飞速增长,如黑客攻击,DDOS攻击等,极大的困扰着用户,给企业的信息网络造成了严重的破坏。能否及时发现并成功阻止网络黑客的入侵,保证网络系统的安全和正常运行,成为所有网络都必须面对的一个重要的问题。目前,流行的网络安全工具有防火墙、IDS、IPS、防毒墙、流量整型等,考虑到各企业对安全性的要求,防火墙和IDS的应用范围最广。
In recent years, the security problems faced by the network have become more and more complex. The security threats are rapidly growing. For example, hacker attacks and DDOS attacks have greatly hampered users and severely damaged the information network of enterprises. It is an important issue that all networks must face to discover and successfully stop the invasion of network hackers in time to ensure the security and normal operation of the network system. At present, the popular network security tools include firewalls, IDSs, IPSs, anti-virus walls, and traffic shaping. Taking into account the security requirements of enterprises, firewalls and IDSs have the widest range of applications.