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ACK flood DDoS attack


This article will guide you on methods to prevent ACK flood #DDoS #attack. An ACK flood DDoS attack occurs when an attacker attempts to overload a server with TCP ACK packets. 

Client requests connection by sending #SYN (synchronize) message to the server. Server acknowledges by sending SYN-ACK (synchronize-acknowledge) message back to the client. Client responds with an #ACK (acknowledge) message, and the connection is established.

When computers communicate via TCP, received packets are acknowledged by sending back a packet with an ACK bit set. 

The TCP protocol allows these acknowledgements to be included with data that is sent in the opposite direction. 

Some protocols send a single acknowledgement per packet of information.

To stop a SYN #DDoS attack:

1. Filtering.

2. Increasing Backlog.

3. TCP half-open: The term half-open alludes to TCP associations whose state is out of synchronization between the two potentially because of an accident on one side.

4. Firewalls and Proxies.

5. Reducing SYN-RECEIVED Timer.

6. SYN Cache.

7. Recycling the Oldest Half-Open TCP.

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HTTP Flood DDOS Attack How to Mitigate the attack


This article will guide you on how to recover from DDoS attacks. Basically, protecting the web server against #DDoS #attacks is important. You can apply these measures to mitigate the error from causing troubles.

DNS #flood is a type of Distributed Denial of Service (DDoS) attack in which the attacker targets one or more Domain Name System (#DNS) servers belonging to a given zone, attempting to hamper resolution of resource records of that zone and its sub-zones.

To prevent DDoS attacks:

1. Buy more bandwidth. 

2. Build redundancy into your infrastructure. 

3. Configure your network hardware against DDoS attacks. 

4. Deploy anti-DDoS hardware and #software #modules. 

5. Deploy a DDoS protection appliance. 

6. Protect your DNS servers.

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Smurf DDoS attack How to fix


In this article , you will learn the measures taken by our Support Experts to mitigate #Smurf #DDoS #attacks.
A Smurf attack is a form of a distributed denial of service (DDoS) attack that renders computer networks inoperable. The Smurf program accomplishes this by exploiting #vulnerabilities of the Internet Protocol (#IP) and Internet Control Message Protocols (#ICMP).
Smurf is a network layer distributed denial of service (DDoS) attack, named after the DDoS.Smurf malware that enables it execution.
1. DoS is one of the oldest forms of cyber extortion attack.
2. As the term indicates, distributed denial of service (DDoS) means it denies its service to a legitimate user.
3. Ping of death and teardrop attacks are examples of such attacks. Flooding: Sending too much data to the victim can also slow it down.

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