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Whitelist vs Blacklist: What’s the difference?
3 min. read
Updated onOctober 4, 2023
updated onOctober 4, 2023
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Key notes
Whitelisting, respectively blacklisting, have been both great protection measures. When it comes to networking and permissions, creating a virtual “guest list” for trusted devices is much safer than relying on just using passwords.
As a rule of thumb, any password can be cracked on stolen, it’s just a matter of time and ingenuity. However, fully replicating a device, in addition to guessing a password, is much more difficult.
Many online services rely on this technique. For instance,geo-blockingservices use blacklisting/whitelisting to keep things in order.VPNsare another great example of whitelist/blacklist-friendly products.
SomeVPNssuch asPrivate Internet Accesslet you exclude some programs from going within the secure tunnel. Or you can set them to always use theVPNconnection, no matter what. And that’s exactly what blacklisting and whitelisting are about.
The difference between blacklist and whitelist
What is blacklisting?
The principle of blacklisting relies on blocking certain individuals, whether they’re devices, services,IP addresses, or entire regions, from gaining access to your resources.
If you operate a service that’s widely available, generally speaking, blacklisting is more common. That’s mainly because it can help you keep at bay only specific individuals instead.
This can also be useful if you operate a game server and you encounter cheaters, for instance. You put their IP address/username/MAC address on a blacklist, and they no longer have access to your game server.
In short, blacklisting is when you deny access to specific individuals to your resources.
What is whitelisting?
Whitelisting is, as you’d expect, an exact opposite of the blacklisting technique. You define a list of trusted entities that can access your resources, and the service remains unavailable to everyone that’s not on the list.
Running an operation that needs to be accessible only to certain entities is an excellent opportunity to use whitelisting. For instance, if you own a business and need to keep the internal network private, only to be available for employees.
You create a whitelist from your employees’ IDs, IP addresses, MAC addresses, or anything you want to identify them after, and they’ll be the only ones able to access your network.
Quite simple, right?
Whitelisting vs blacklisting
When it comes to keeping your resources secure, you need to make the best choice. Whether it’s blacklisting or whitelisting you’ll choose, the principle stays the same: both techniques restrict your resources from general access.
However, in some situations, one is better than the other. Additionally, choosing the wrong method usually leads to wasting precious time and losing efficiency.
For that reason, we’ll tell you when it’s best to use whitelisting, and in which cases its counterpart (i.e. blacklisting) is more fit.
Both whitelisting and blacklisting can be handy if used right
The bottom line is that either technique can come in handy, as long as you use the right one according to your needs. As a rule of thumb, the wider the access you want for your service, the brighter the color of your list should be.
Some services, such asfirewallsandVPNs, offer this option inherently. The purpose of these services is to restrict or allow access to certain resources for some entities. Therefore, it makes sense that they make use of these blocking techniques.
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More about the topics:firewall,security,VPN
Vlad Constantinescu
Vlad might have a degree in Animal Husbandry and Livestock Management, but he’s currently rocking anything software related, ranging from testing programs to writing in-depth reviews about them.
He spent 3-4 years as a software editor at Softpedia and another year as a VPN specialist before he landed his current job as an author at Windows Report.
In his free time, Vlad enjoys playing guitar, doing jigsaw puzzles, researching cybersecurity, and even having a good read on rainy days.
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