WiFi (Wireless) Password Security.
In this Article we're going to talk about the different wireless security methods and protocols that are used in wireless networks.
Now most of us had connected to a Wi-Fi network with our
laptop, tablet or even our smartphone, and to join that network with our device
you had to select a network name and you had to supply a password.
Now Wi-Fi network can be just open with no password required, so that means that anybody can join it. However, in the majority of cases Wi-Fi networks will be secure and will require a password.
WiFi (Wireless) Password Security |
Now there are several different protocols that are used for
securing a Wi-Fi network. So, let's start with a secure protocol called WEP
or Wired Equivalent Privacy was developed in 1999 and it's the earliest security
protocol that was used for wireless networks.
And also, as its name
implies it’s meant to supply the same security to wireless networks as it did
for wired networks. However, this turned out not to be the case because after a
time it was found out that a 40-bit encryption key that WEP used was vulnerable
and not secure.
It was easily hackable.
So that's why today
WEP is no longer used and modern wi-fi routers won't even have it as an option anymore.
So, a better security protocol was needed for wireless networks.
And that brings us to WPA or Wi-Fi Protected Access is another wireless
security protocol that was developed to solve the problems of WEP. WPA is far
better than WEP, and this is because it uses a stronger encryption method
called TKIP.
Which stands for Temporal Key Integrity Protocol. And TKIP
dynamically changes its keys as it's being used and this ensures data integrity.
But even though WPA is more secure than WEP. even today WPA is outdated because
TKIP did have some vulnerabilities.
And that brings us to WPA2 WPA2 was developed to provide even
stronger security than WPA. And it does this by requiring the use of a stronger
encryption method. While WPA uses TKIP for encryption which is known to have
some limitations WPA2 uses AES which stands for Advanced Encryption Standard.
AES uses a symmetric encryption algorithm which makes it
strong enough to resist a brute-force attack in fact AES is so secure that the
U.S. federal government has adopted it and is now using it to encrypt sensitive
government data.
Now when you log into
the Wi-Fi router's configuration page can you go into the Wi-Fi security section
this is where you would find the different security protocols that you can
choose from to protect your Wi-Fi network.
So here is an example from an older Link sys router and here
you can see the WEP, WPA and WPA2 protocols that we discussed. Now as I said
this router is a few years old and it still has WEP as an option. However newer
routers like this one here won’t even have WEP as an option because WEP is weak
and outdated and is no longer used and thank god for that because it was garbage.
Now you also noticed
that on both of these routers there’s an option that has both WPA and WPA2 and
this is a mixed security option. This option enables WPA and WPA2 at the same time
so it’ll use both TKIP and AES security. Now the reason for this option is for
compatibility purposes because some older devices like prior to 2006 may not be
compatible with using AES encryption that’s used with WPA2and so these older
devices will connect to the older WPA protocol but at the same time modern
devices will connect to WPA2.
Now some people might ask why not just choose the mixed
option all the time since it’s the most compatible with all devices.
Well you can do this but the problem is that in addition to
using AES. it's also using TKIP and since TKIP is not as strong as AES. you’re
leaving your network more vulnerable to a breach. However, if all of your
devices are modern then the best option is to choose WPA2 which only uses AES.
Now the next generation of wireless security is WPA3.WPA3
was introduced in 2018 and according to the official Wi-Fi website WPA3
provides cutting edge security protocols to the market. It adds new features to
simplify Wi-Fi security and enable more robust authentication and it will
receive increased protections from password guessing attempts.
Now WPA3 won’t be available on every Wi-Fi router that you purchase today because it was just introduced last year. However, you will start to see it more and more on Wi-Fi products in the next few months.
Now so far, we discussed a few password protected security protocols but there is another wireless security method that doesn’t require you to type in a password and this method is called WPS. WPS stands for Wi-Fi Protected Setup and WPS was designed for people who know little about wireless networks to make it as easy as possible for their devices to join a wireless network.
So
here is a WPS configuration page for our router.
And there are a couple of different methods that are used
with WPS but by far the most common method is the push button method. So, with
this method you would just press a couple of buttons and then you'd be connected.
So for example most routers today will have a physical WPS
button that you can press and a lot of Wi-Fi printers will also have a software
or a physical WPS buttons let’s say you wanted to connect this wireless printer
to your Wi-Fi networks you would press the WPS button on your Wi-Fi router and
within 2 minutes you would press the WPS button on your printer and then your
printer would connect to the Wi-Fi router in a few seconds.
And that’s really as simple as it gets. And you can also use
method two if you want if your client has a WPS pin number. So, you would just
enter that pin number into the field below and within a few seconds it’ll connect.
So as stated before WPS is the easiest way to join a
wireless network and a lot of manufactures have built their wireless products
with WPS. And this is to make it as simple as possible for their costumers to
join their device to a wireless network.
Now there’s one more method we need to talk about and this
is called the Access Control or in some routers it’s called the MAC Filter and
with this option you can either allow or block devices from joining your network.
Every network adapter has a MAC address and MAC address is a
hexadecimal number that uniquely identifies each device on a network and with
Access Control you can either allow or block access by using the device’s MAC address.
When a device is blocked it would only be able to get an IP
address from your router but it won’t be able to communicate with any other
device and it would not be able to connect to the Internet so the Access
Control is just an extra layer of security that’s in addition to your Wi-Fi password
and the Access Control is also for wired devices.
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