Is your modem safe? Check it with our modemtest.

With this free test, you can check the security of your home network within seconds. We test if hackers can gain access to your home network from outside.  You can find more information about how the internet is connected to your home, what WiFi and a modem are at the bottom of this page.

Test the Safety of Your Own Modem

With Fraud Detector, you can test the security of your own internet connection and modem. We test the ten most common security mistakes in just a few moments. This test only works if you do not have a VPN or mobile data on. This is because we use the IP address that you are using to visit this page for this test.

To start the test we ask you to accept the terms and conditions. Then click on ‘Start the test’.

I would like to test my modem and agree to the Terms and Conditions

<- After starting the modemtest, the results will be shown here ->

How Does This Modem Test Work, and What Is a Modem?

Every home network has its own digital “front door.” This front door can be seen as a modem. Like most houses have a back door, a modem also has multiple entrances. These are the ports of a modem.

A common mistake is that some ports are not locked. Just like with a house, you want to lock your back door when you are not using it.

If a port is open, it does not mean that you can be hacked, but the likelihood of this happening is much higher. For example, if the devices in your home have weak or no passwords or if there is a security flaw.

If the test is negative, you will need to seek help from a friend or acquaintance with technical knowledge. Possibly the modem is too old or there are setting errors. Then one or more ports are open to the entire internet.

There are a few simple rules for the modem test:
– The test works only on your mobile if you are at home and connected to your home wifi.
– If you use a VPN, we measure the VPN instead of your home network. So turn off the VPN, do the test, and then turn on the VPN again.

Soon, we will publish a checklist that you can use to make your modem more secure in the case of a negative outcome. For this you can follow our social media for updates.

For this test, the IP address you use to visit this website is used. You can read more about what an IP address is on this page. Below is the IP address that you are currently using to visit this page and where we are performing the modem test:

What Is WiFi and a Router then?

We call this test a modem test, others might call it a WiFi test, but technically speaking, this is not entirely correct. The problem is actually that we don’t have a good word for the box we receive from the internet provider. Some people and companies call it a router, others call it the modem, and many people refer to the box as “the WiFi”. However, these days it is often all three in the same time. Below is a simple explanation of the difference between WiFi, a modem, and a router.

An internet connection works via internet cables that are laid in almost all streets. Information from the entire neighborhood flows through these cables. In fact, the entire internet consists of cables, modems, and routers. All routers on the internet work together to bring you from A to B via the fastest route.

A modem can be seen as a translator. All internet traffic that runs through the cables in the street follows a different language (protocol) than what your devices can read at home. In the past, you used to buy or receive the modem as a separate box, and then you would install a router. A modem has one input and one output. The box you receive from your internet provider these days is both a router and a modem. You can connect multiple devices to this box at home while this box is only connected to one cable. Your router ensures that all devices connected through this one cable have a working internet connection. A router thus has one input and often four outputs.

In fact, WiFi is nothing more than internet through the air. Just as the modem and router have been merged into one box, this also applies to WiFi. Almost all internet providers have now also placed WiFi in the same box as the modem and router. Because almost no internet cables are used in homes anymore, WiFi has become colloquial for everything that makes internet work in a house, even though WiFi actually only enables the protocol that allows an internet connection through the air.

Perhaps you’ve also heard the terms ‘switch’ and ‘firewall’? These two building blocks are also now present in all boxes that you receive from the internet provider. The switch technically makes the connections between internet connections faster. It’s more of a handy feature and there’s little you can adjust there. The firewall is the gatekeeper that, together with the router, is supposed to keep hackers out.

Hopefully, this also makes it clearer that our modem test does not test the WiFi (the wireless signal) of your home, but rather the modem, router, and firewall.

If you want to learn more about modems and routers, you can read about it on these pages: