The DOS attack ACK Scan is the process where the hackers send a lot of traffic to the server, and the firewall performs a scan. The Denial-of-Service could cost highly if your system is not protected enough and contains your personal information.
This article tells you how you can improve the security of your network, along with some tips from technical experts.
Keep reading this article to know everything about the DOS attacks.
- 1 What Is a DoS Attack Ack Scan?
- 2 The Main Types of Attacks
- 3 Preventing the System From Dos Attacks
- 4 Conclusion
What Is a DoS Attack Ack Scan?
DoS attack Ack Scan is the process when DOS attacks target Wi-Fi routers to slow down the internet, where the ACK scans are used to obtain the firewall information and catch the decontaminated ports or hosts. This attack shuts down the entire machine or network.
– Dos Attack
The DoS attack stands for the “Danial of Service.” When this happens, the user can not access the system. These attacks flood the router with traffic or send so much information that it crashes. The Dos prevent the users from functioning. This attack could be very harmful to the system in the worst scenarios.
A DoS attack could be terrifying when you face it for the first time because you don’t know what it is. Most people panic there and think that their personal information has been revealed. But this doesn’t always happen.
If your system is protected enough, your personal information cannot be revealed, and you do not have to worry about it. Still, if your system is vulnerable, you might need to worry about it as your personal information can be leaked.
– Ack Scan
ACK scan is made up of two words; ACK and scan. This means that something is performed acceptance is sent by the firewall. The scans are commonly used to acquire firewall information and detect filtered ports or hosts. These scans represent that your security is working correctly.
When a hacker sends a lot of bot traffic to the server, the firewall of CND or server performs a scan of traffic, and then the acknowledgment is sent to the users. The DOS attack: ACK Scan informs you that your firewall is working correctly.
The DoS targets businesses or systems having sensitive information. You should know the attack if this is your case. The plan goes into the scan as soon as it determines an attack.
The Main Types of Attacks
There are three types of attacks; flood attacks, DDOS attacks, and Unintended DoS.
– Flood Attack
A flood attack occurs when the system is overloaded with traffic for the servers to buffer. This attack can slow down or freeze your system. If you find any of the following names in your DoS attack, you have probably had a flood attack.
- Butter overflow attack: This is the most common flood attack. In this case, the network receives more traffic than it can handle. There are more attacks on the list as well. This type of attack will take advantage of bugs in the network or applications.
- ICMP flood: This type of flood attack uses network devices and sends spoofed packets to every computer on the targeted network. This can be very harmful to the network.
- SYN flood: This type is the least common among flood attacks. This type of attack sends a request to a server for a connection but never goes through and connects, leaving an open port. It saturates those posts by sending proposals, making the relationship impossible for users.
Another type of attack called DDOS stands for Distributed Denial of Service. In the case of this attack, the systems are arranged together to focus on a single target. This attack doesn’t occur randomly, but when a particular reason exists to attack a specific person. This attack can cause many problems. Below are some representations of DDOS.
- [DoS Attack: SYN/ACK Scan] from source: 184.108.40.206, port 80, Monday, May 11, 2021
- [DoS Attack: RST Scan] from source: 220.127.116.11, port 6112, Tuesday, June 06, 2018
- [DoS Attack: ACK/SYN Scan] from source: 18.104.22.1680, port 80, Wednesday, February 09, 2022
- [[DoS Attack: TCP/UDP Chargen] from source: 22.214.171.124, port 53722, Saturday, November 03, 2022
- [DoS Attack: ACK Scan] from source: 126.96.36.199, port 453, Saturday, May 09, 2017
- [DoS Attack: SYN/ACK Scan] from source: 188.8.131.52, port 58, Thursday, February 06, 2020
- [DoS Attack: RST Scan] from source: 184.108.40.206, port 51225, Friday, January 17, 2018
- [DoS Attack: RST Scan] from source: 34.95.260.268, port 6962, Monday, December 04, 2019
If you see these entries in your log, you will immediately understand that there is a DDOS. Vulnerable devices can easily face DDOS attacks.
– Unintended DoS
Unintended DoS occurs when your system is crashed by receiving tons of unintended requests or while servicing very low bandwidth areas. All attacks are not heinous.
If the site posts something that goes viral, millions of users will visit that site. In that case, the site will be overloaded with tons of requests; and if that site is not capable of handling that much load, it eventually might go down. This we can call an unintentional DoS. To prevent the unintended DoS, it is essential to architect your website for such a huge scale.
The Denial-of-Service attacks can also occur while servicing low bandwidth areas. When you stream content internationally, you attempt to send information to those people who have bad internet connections. And in that process, packets drop; and to send the information to the destination, the service attempt to resend all dropped packets. That attempts are made until the packets are received successfully.
That cycle makes the load double or even triple, and eventually, your service might go slow or even unreachable for everyone.
Preventing the System From Dos Attacks
To prevent your system from being attacked, the best thing you can do is to avoid attacks. Do not leave your computer vulnerable; save it from viruses, bugs, malware, and other problems that can be harmful to your computer. If you feel that your computer is not protected enough or experiencing an irrelevant activity, you should get your computer checked out. You can follow the following steps to protect your computer from attacks.
– Develop a Response Plan
If you don’t have private information or data on your computer that cannot get leaked, you should develop a response plan so that when you notice any problem. Whether you are a big business or handle the personal information for credit cards, you should create a response plan. Consider some best steps to prevent these updates and save your systems.
– Secure Your Network
The next thing you should do to secure your network; keep in mind that securing your network is not only for preventing attacks; it is handy for many other things. You should have multiple layers of defense against attacks; you have to check your settings and make changes. You can have various antivirus, VPNs, load balancing software, firewalls, and anti-spam. When all systems work together with these tools, your network will be saved in most cases.
Most systems provide some options, but you should always be adding more support. You can also use a cloud-based solution and pay for more help.
Keep checking the connections to find any vulnerability and be ready for any situation; if you keep your door open for the attacker, you might lose your sensitive information.
– Network Security
You should always be taking concrete steps to improve the security of your network. Your password should be very complex, and try to change them often to keep any attack away from your network. If you experience any phishing, report it and change your passwords and other necessary details. Keep your firewall secured, and don’t put such information on your computer that should not be there.
These steps are critical, but most people don’t take them seriously. They are fundamental steps yet instrumental, and you should be practicing them to prevent your system from being attacked.
– Network Architecture
Businesses should constantly be investing in high-security network architectures, and it should be their top priority. Security is vital for companies and big companies, and they should create a network with redundancy. So that if one server is attacked, the others will prepare for the extra work. The resources will spread out, and the entire business doesn’t get affected in case of any bad attack.
This step is solely for business, not for home users.
– Warning Signs
You should be aware of the attack and identify them quickly. The most common signs of an attack are as follows.
- Network performance would slow down to a great extent, like you can not open files or access webpages and then speed up randomly.
- Particular webpages might be unavailable for you or inability to enter the webpage.
- You can experience multiple attacks or scans within a short period.
- You’ll see that antivirus would be scanning randomly.
- You might receive multiple notifications of an attack on the firewall.
These signs are alarming and can be detected easily as you would feel that something is not performing as it is supposed to. Sometimes even non-computer devices show these signs as well. If you have any tech item like a smartphone or a smart speaker connected to the internet, you might identify the problem there first.
– Technology Companies
Some companies create such products that can attract attacks easily. For example, NetGear and Amazon are often attacked because people have vulnerabilities in their hardware. Such devices produce results for hackers and attackers to get attacked regularly. The developers and stakeholders have to develop solutions and fixes to ensure DoS protection.
Sometimes the hacker attacks the system, and you can not do anything but regret it. To avoid such a situation, you have to be prepared not to be a victim when a hacker attacks.
We have learned all about the DOS attack and Scan. We learned how attackers attack and how we can prevent those attacks by improving our security. Furthermore, we also get to know some tips to identify if an attack has occurred.
Let’s review today’s article:
- Denial-of-Service (DoS) attack and ACK Scan is a complete process in which when the hacker attacks your system by sending high bot traffic to your system, the firewall comes into action and performs the scan.
- If you feel that connections are getting slower, some web pages are not available, or the antivirus is scanning randomly, your system might have been attacked.
- You can secure your computer by developing a response plan and then using antivirus, VPNs, and firewalls.
This is the time for you to save your network from such attacks by learning this article.