Dos and DDOS are one the most popular and powerful attack which can cause loss of millions of dollar. Let’s understand the difference between Dos and DDos attack and What are the different types of Dos attacks are there.
Dos (Denial of Service) is a type of attack where the attacker floods the server in order to take it down. The goal of a Dos attack is to take down the server availability and make it unavailable to everyone. In simple words, the attacker flood target server with soo many requests until the server goes offline.
Every computer system or server has some capacity which it can handle. For example, a server has RAM, CPU and other components that works to keep it working. When you send a request to the server, the server takes action to that request and reply back within some time based on its capacity.
but if you send multiple requests to the server at the one-time server will reply to the request one by one and it will take time for the server to reply to every request, because the server has limited capacity. Suppose the victim server can reply to 3 people at one time and 6 people send a request to it. Now the server will reply slowly because the number of requests is greater than it can handle.
At the same time if the number request increase then the server will not be able to reply to anyone and will be exhausted, Now the server will go offline because of too many requests. That’s how all things work.
DOS – DOS or Denial of Service is a type of attack where the attacker floods the server with single a system. in Dos attack Number of requests to the server is less.
DDOS – In Distributed Denial Of Service multiple systems do dos attack at one time to the one target. In simple terms, multiple systems target one system. A DDOS attack is more successful and has much better chances to take the server offline. DDOS is mostly done by a bot and C2 server.
The attacker creates any malware and infect soo many computers and control all the infected computer with one server called C2 or command and control server.
Dos Attack can be done in multiple ways, how the request will be sent and what method can be used.
Destination Unreachable. Attacker flood the server with this process.
SYNpacket to the server and the server reply
SYN/ACKand waits for the
ACKpacket and keeps the connection alive. but the server never receives the
ACKpacket. Mostly server sends a
SYNpacket with spoof source IP.