Web server cannot handle huge amount of incoming requests and responses, result denial-of-service will occur. HTTP GET attack: In this attack, multiple computer or botnets are coordinated to send multiple http requests for images, files, or some other resources from a targeted server.HTTP flood uses GET or POST requests to attack a web server or application. This attack is designed to overwhelm web servers’ resources by continuously http requesting from many source attacking machines called botnet. HTTP flood attack is type of application layer Distributed Denial of Service (DDoS) attack. Fragmented AttackĪlso known as teardrop attack is a kind of denial-of-service (DoS) attack, In it, an attacker sends fragmented data packets to the target device/server and the server is unable to reassemble the packet, causing overload. Old computer system cannot handle large size packets and easily vulnerable to this attack but modern computer systems are not vulnerable to ping of death attack.
When a maliciously large size packet is transmitted from the attacker to the target system, the packet becomes fragmented into segments(small piece of data), When the target system try to reassemble the fragments and ends up with an oversized packet, memory overflow could occur and causing the target system to crash, freeze or reboot. The size of an Internet Protocol Version 4 (IPv4) packet including the IP header is 65,535 bytes, including a total payload size of 84 bytes. ICMP echo or ping is used to test a network connection, If the connection is working fine, then source device receives a reply from the targeted machine. Ping of Death (PoD) is a form of Denial of Service (DoS) attack in which an attacker trys to freeze, destabilize, or crash the targeted computer/server or service by sending an oversized packets using a simple ping command.
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