How to Design a Safer DNS
How to Design a Safer DNS
In this article, we discuss a few steps to take in order to design a sound DNS system that will keep you secure from outside attacks.
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With domain name systems facing increased threats from hackers and other nefarious actors trying to profit off someone else’s loss, it’s more crucial than ever to design safe DNS systems that are all but impenetrable to outside attacks. Despite the imperative to design safer systems, however, many IT experts today are at a loss when it comes to formulating a game plan to produce better, safe DNS systems, and don’t know where to turn to for advice.
The good news is that it’s far from impossible to design a sounder DNS system that will keep you secure from outside attacks, and any tech guru who knows what they’re doing can follow these easy tips to ensure their system is more secure than ever.
Designing Your Dream System
The first thing that tech gurus embarking on a quest to design a better DNS system need to understand is that their imagination’s the limit; with creative thinking that’s backed by your impressive tech skills, you can assemble a system that helps foil outside attacks while still ensuring that domain names are properly translated into IP addresses. It will take more than wishful thinking to come up with such a system, however; for that, you’ll need tried and true tactics that ensure that even the most complicated outside attacks are negated long before they do any serious damage.
With DNS-based attacks costing businesses millions of dollars annually, it’s more imperative than ever that you get started designing a safer system. So what approach should you take when it comes to your own system? For starters, you should review the most common types of DNS-based attacks in order to gain a comprehensive understanding of them, as a failure to understand and appreciate the ins and outs of your opponent’s weaponry will essentially negate any countermeasures you employ against it to defend yourself.
After you’ve been briefed on what kinds of attacks might be harassing your system, you can get to work establishing better core infrastructure services that mitigate future attacks. You should start by picking the right DNS server for the job, which will almost certainly depend upon your specific needs. Some servers are more popular than others, but by comparing their various pros and cons, you’ll be able to design a safer system that meets your specific needs while simultaneously ensuring that outside attackers have a hard time getting into your network.
If you don’t want to use one of the more popular servers, just be aware that a more obscure platform could harm you in the future due to a lack of scalability. Understanding the capacity and scalability of the platform you end up picking is crucial for your security in the future, as what works for you now may not work later down the line when your DNS system needs to scale up and handle more operations. Thus, when it comes to designing your system, be sure to remember that the most desirable option isn’t always what works for you right now, but what will continue to work for you in the future as your DNS system grows.
Avoiding Common Mistakes
When you’re trying to design a safer DNS system, it will prove beneficial to you to review commonly made mistakes to ensure you don’t mess up like others have before. For instance, many DNS systems make far too much information available, when one of the defining aspects of a good, secure system is that it only reveals what it absolutely has to. The broader public should not have access to your DNS servers or other DNS data that has nothing to do with their inquiry, which may seem like a given, but you’d be surprised at how many companies employ DNS systems that reveal everything to the world, thus rendering them vulnerable to future intrusions. Your recursive nameservers, for instance, should be closely guarded secrets that only those within your organization have access to, not something blindly broadcasted to the wider world.
Your primary servers should be hidden, as well, rather than being listed as nameservers for any zone. Allowing those to be accessible to any random user who tries to access them would spell disaster for your DNS security, and you should do a basic review of your current DNS system to ensure everything that should be kept hidden from the public eye is where it’s supposed to be. Limiting access to your primary servers to only those individuals who need access to it, either for organizational or maintenance purposes, is a small but often missed step that you can take to heighten your DNS system’s security.
You should certainly be taking steps to verify the integrity of the data passing through your servers, too. If you’ve yet to examine using DNS security extensions to guarantee that the DNS data pouring in and out of your servers is legitimate, you should consider investing in one now to up the overall integrity of your system. When it comes to making investment decisions like this, don’t be afraid to splurge; after all, a failure to spend enough money on your IT infrastructure is a surefire way to guarantee any suitably-equipped outside attacker will find a weakness and get in.
Don’t lose the forest for the trees when trying to design a safer DNS system; no one aspect of your security will keep you safe, but rather, you’ll need an entire, well-designed security apparatus to make sure your DNS system isn’t compromised. Invest your money properly, and don’t be afraid to reexamine the fundamentals, and you’ll have a much safer DNS system before you know it.
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