What is DoS and DDos Attack

What is DoS and DDos Attack and Security Solutions | 2020

DoS (Denial of Service) and DDoS (Distributed Denial of Service) are sophisticated threat that are very difficult to detect and eradicated.
A DoS and DDoS attack an attempt to make an online service unavailable by overwhelming it with an excessive amount of traffic so that it cannot handle it.
There area several tools that have made it quite simple to disrupt any website's availability through these attacks.
In a Dos attack, legimate users are deprived of access to a networl or web resource.
In DoS, an attacker creates a program that establishes a connection on a service port by forging the packet's header details and then leaves the connection..

Now if the host can handle 20 requests per second, the attacker sends 50 requests per seconds. This has a high probability of causing the host server to go down due to mass fake requests received which far exceed the maximum volume that it cab handle.
A DDoS attack is type of cybersecurity threat which target business that offer online services through website.
The attack is to overload these website with traffic from multiple sources and usually with more traffic than that the server can handle.
The overload cause website to run slowly for genuine users and, it some case, shutdown a website completely.
The primary goal of DDoS attacks is to prevent an organisation from functioning properly and to bring operations to a standstill there by hurting them financially and in term of reputation.

The following measures should be implemented to tackle thi threat:

Monitor the packets to save your server from the entrance of the counterfeit packets.
Timely upgrade the security patches on your host's operating system.
Beware of running of your server very close to full capacity.