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Modem vs router vs firewall6/8/2023 ![]() This means that any vulnerabilities on your computer, be it a vulnerability in the operating system or a port being left open, are potentially accessible to anyone that knows your public IP address. The IP address that is assigned to your modem, which is known as your public IP address, will resolve directly to your computer. ![]() With your computer connected directly to your modem, it will be completely exposed out on the internet. What Are the Risks of Connecting Directly to Your Modem? The bottom line is that having devices connected to a switch that in turn is connected directly to a modem is an even worse setup given that more than one device is exposed on the internet. This still prevents it from communicating with other devices on the network and being able to access the internet., so won’t really benefit you in any way. In some circumstances when there are no available public IP addresses, your device will receive an APIPA address (.x) when it attempts to join the network Once your ISP has reached the maximum number of IP addresses it can give, it will simply stop and any additional devices will not receive one and won’t be able to communicate on the network.įor this reason, connecting a switch directly to the modem really is a complete waste of time. Often this is a single IP address, but you may get two or three if you are lucky. In addition to this, your ISP will only provide you with a limited number of public IP addresses. You will just have even more devices exposed over the Internet! If a single computer can get an internet connection when connected directly to the modem, why not plug in a switch instead? That way multiple devices plugged into the switch can get an internet connection at the same time, surely?Īll devices should be able to communicate with each other and be able to access the internet, however, the security concerns we described above still apply. You may also like: How Does a Router and Modem Work Together? Will a Network Switch Work With a Modem? In my opinion, this is the number one reason to always be making use of a router in a home network set up. Unlike a router, it has zero security features. ![]() The issue, which I personally consider to be quite a major one, is from a security standpoint.Ĭonsider your modem to be a simple data transfer device. When your computer is connected directly to your modem, it is in turn connected directly to your internet service provider (ISP) and from there, the internet.Ĭonnectivity-wise, there is nothing wrong with this setup you will be able to browse the Internet as you would normally expect to be able to. ![]()
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