14 May 2019
Best Techniques to Protect Enterprise IoT Devices from DNS Rebinding Attacks
Judelyn Gomes
#Data Engineering | 4 min read
Best Techniques to Protect Enterprise IoT Devices from DNS Rebinding Attacks
#Data Engineering
Judelyn Gomes

DNS (Domain Name Server) rebinding attacks are one of the malicious activities performed by the hackers to breach a private network. Generally, the hackers employ DNS attacks to take the victims machine under his control for carrying out the various vulnerable process.

Nowadays, many enterprise IoT devices, electrical equipment, and gadgets are vulnerable to DNS rebinding attacks. In order to protect those devices from DNS rebinding attacks, you should take the right measures. Go through this article to know how you can protect the enterprise IoT device from DNS rebinding attacks.

DNS Attacks and It’s Working

People tend to remember the domain names than memorizing the numbers. And so, the DNS system converts the domain names into IP addresses, to help connect with the system. The DNS acts as an intermediate between people and the internet to ensure security.

The attackers make use of their own DNS server and website created in JavaScript for DNS rebinding attack. At first, they hack the IP address of the system via sending an email or malicious links. Once the victim responds to the link or mail the attacker’s DNS server alters the IP address with the new one. Now, the attacker can do their desired activities with the victim’s system.

Protection of Enterprise IoT Devices from DNS Rebinding Attacks

With the advancement of technologies, the IT infrastructures are well-equipped with IoT devices to automate the business process. Those IoT devices are activated with the important component of the internet called DNS server which must be protected to stay away from vulnerable attacks.

Monitor the Devices

According to the research reports, the IoT manufacturer, user and browser vendors must take steps for protecting IoT devices from DNS binding attacks.

The simplest solution to protect the IoT devices from DNS rebinding attack is to keep monitoring all the devices that are interconnected together. Have more focus on the unmanaged device that may be easily breached.

Create Inventories

Being an enterprise owner, you must make an inventory of every IoT device connected. With the information, you must move the essential one to different network segments so that they can be identified by the DNS attackers.

Protect IP Address

  • Many DNS attackers think that all the IoT devices work under the same IP address. So, the IoT users must connect their DHCP server of the router to deliver the IP addresses on a different subnet.
  • The users must deactivate the WebRTC available on the browser to prevent the IP address from attacking. So, the attacker will be sending a request to all the routers address to find the private user IP address.
  • The browser vendor can protect the IoT devices with the development of extension that provide limited access of public websites to a private IP address.
  • The manufacturers of IoT devices should manage the requests of the host header that are sent to web interfaces. This helps to block the access if there are no private IP addresses related to RFC 1918.

Do Risk Analysis

Employ your staff to do the risk analysis of your IoT devices that are used in your organization. This analysis helps you to differentiate the devices that are safe and easily attackable. It is better to make the analysis through automation rather than using the manual method.

Keep Updating the Devices

The most recommended way to protect IoT devices is by deactivating the unused services, changing passwords of HTTP server in all the devices and update the software used at regular intervals. The software must be updated with the manual download process.

Final Thoughts

Thus, these are the best methods to protect the IoT devices from DNS binding attacks. Adopt these techniques in your IT infrastructure to safeguard your devices from threatening. Many experts advise integrating the IoT devices into cyber-security monitoring services thereby reducing the chance of severe malicious attacks.

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