What is DDoS?
A Distributed Denial-of-Service (DDoS) attack is a malicious attempt to disable websites and/or online services, often by flooding them with traffic, thus making their legitimate users wait longer for access or even preventing them from accessing the service at all.
Two-layer protection (also known as double-layered security) uses two layers of defense to detect and prevent malicious network traffic.
First Layer
The first layer of DDoS protection provides basic network security including packet filtering, firewalling, intrusion detection, anti-virus/anti-malware scanning, and spam filtering. The basic goal of this type of firewall is to prevent unauthorized access to your network. The most popular firewall products are Cisco's ASA, Check Point Firebox, Palo Alto Networks' NetIron, and Fortinet's FortiGuard. These devices are often referred to as “firewall appliances” because they combine several different features in one device.
Second Layer
A second layer of DDoS protection is called application layer DDoS protection. Application layer DDoS protection is designed to stop attacks targeting specific applications rather than networks. In addition to providing basic network security, this layer detects and blocks malicious traffic targeting specific applications.
Two-layer DDos protection
A two-layer DDoS protection system consists of 2 layers:
• A first line of defense
• A second line of defense
This layer is designed to prevent attacks from reaching your website and database. This includes blocking IP addresses (IPv4 or IPv6), network traffic (TCP/UDP/ICMP), and application-specific protocols. If any of these fail, the attack will not reach your site.
The first line of defense consists of firewalls, routers, and switches that block incoming packets before they get to the computer. These devices prevent attackers from sending harmful data over your network.
The second layer is designed to detect and block malicious activity before it reaches your web server. This includes detecting malicious behavior at the operating system level, detecting attacks while occurring, and stopping them from causing harm.
The second line of defense includes antivirus software and antispyware tools that monitor the network and look for suspicious behavior. Once malware is detected, it is quarantined and removed immediately. If someone attempted to hack your system, these two layers would stop them.
