DoS attack tools
The following are some of the tools that can be used to perform DoS attacks.
- Nemesy– this tool can be used to generate random packets. It works on windows. . Due to the nature of the program, if you have an antivirus, it will most likely be detected as a virus.
- Land and LaTierra– this tool can be used for IP spoofing and opening TCP connections
- Blast
- Panther- this tool can be used to flood a victim’s network with UDP packets.
- Botnets– these are multitudes of compromised computers on the Internet that can be used to perform a distributed denial of service attack.
DoS Protection: Prevent an attack
An organization can adopt the following policy to protect itself against Denial of Service attacks.
- Attacks such as SYN flooding take advantage of bugs in the operating system. Installing security patches can help reduce the chances of such attacks.
- Intrusion detection systems can also be used to identify and even stop illegal activities
- Firewalls can be used to stop simple DoS attacks by blocking all traffic coming from an attacker by identifying his IP.
- Routers can be configured via the Access Control List to limit access to the network and drop suspected illegal traffic.
Hacking Activity: Ping of Death
We will assume you are using Windows for this exercise. We will also assume that you have at least two computers that are on the same network. DOS attacks are illegal on networks that you are not authorized to do so. This is why you will need to setup your own network for this exercise.
Open the command prompt on the target computer
Enter the command ipconfig. You will get results similar to the ones shown below
Switch to the computer that you want to use for the attack and open the command prompt
We will ping our victim computer with infinite data packets of 65500
Enter the following command
HERE,
- “ping” sends the data packets to the victim
- “10.128.131.108” is the IP address of the victim
- “-t” means the data packets should be sent until the program is stopped
- “-l” specifies the data load to be sent to the victim
You will get results similar to the ones shown below
Flooding the target computer with data packets doesn’t have much effect on the victim. In order for the attack to be more effective, you should attack the target computer with pings from more than one computer.
The above attack can be used to attacker routers, web servers etc.
If you want to see the effects of the attack on the target computer, you can open the task manager and view the network activities.
- Right click on the taskbar
- Select start task manager
- Click on the network tab
- You will get results similar to the following
If the attack is successful, you should be able to see increased network activities.
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