In an average home or business network, there are two types of IP addresses. These are your internal and external addresses.
The first type, your external IP address, is the address given to your router (by your ISP – usually dynamic), and is the address that websites see when you go online.
On the other hand, your internal IP address is the IP address assigned to you, usually by your router, on your home network. Every device that connects to your router will have a separate internal IP address, even if they use the same external IP address (using a technology called NAT, but we won’t go into that now!).
Regarding internal IP addresses (LANs), there are two ways to assign one to your computer.
- Use DHCP on your router to automatically assign addresses to devices that want to connect to your network.
- Manually and individually assign a static IP address to each device.
This article discusses the advantages and disadvantages of using DHCP to individually assign IP addresses and static IP addresses for all your devices.
- How do you get free wifi at home?
- To find your router’s IP address
- What does the router do?
What is DHCP?
With DHCP, or Dynamic Host Configuration Protocol, the router can automatically assign an individual IP address to all devices and computers in the network.
This is a common feature of a wireless router that allows users on your network to quickly and easily connect to the router. It differs from the static IP address in that you are assigned a new IP address each time your device connects to the router.
Using DHCP on your router to assign IP addresses ensures that each device has its own unique address. Not only is this more convenient than giving each device a static address, but it can also reduce the number of IP address conflicts on your network.
What is a static IP address?
A static IP address is an IP address that is the same every time you use your computer. You assign these addresses manually on your device, and the address does not change even if you restart your computer.
They are especially useful if you or the application need to know the IP address of your device. For example, when setting up a local server and certain types of games (port redirection, etc.).
If you want to assign static addresses, make sure that the addresses are in the same network and that there are no duplicates! This can cause major problems in your network!
You can have DHCP addresses and static IP addresses on your network if they are on the same IP network. However, we strongly recommend that you keep the actual static IP addresses and the DHCP range separate. For example:
- The IP addresses that can be used on the network are 192.168.1.1 to 192.168.1.254 ? (192.168.1.0/24).
- The range of DHCP ranges from 192.168.1.100 to 192.168.1.254.
- Static IP addresses can be configured between 192.168.1.2 and 192.168.1.99 (normally 192.168.1.1 is the default gateway, i.e. the router).
Here is the first summary and then a more in-depth look at the DHCPvideo.
How to enable (or disable) DHCP on your wireless router
Most routers have a built-in DHCP server, so it is often easier to use the router’s DHCP function to assign IP addresses. Please note that these steps are general and approximate guidelines. If they are not suitable for your router, we recommend that you refer to your router’s instructions.
To configure the DHCP function on your WLAN router : 1 :
1. You must first access your router. Normally this can be done by entering the router via a browser window. You can do this by entering the router’s IP address in your browser and entering your login details.
If you are not sure of your router’s IP address, check the default gateway on your Windows PC/laptop:
- Open a command line. Enter the PDC in the Start menu.
- Type ipconfig and press Enter :
- Find the default gateway under the adapter you are using. Your adapter depends on how you connect to the router. It is either a wireless system or an Ethernet (cable) system. The address will look like this:
- The default gateway is almost certainly the IP address of your router!
2. Then you need to login to the section to configure your local network.
3. Somewhere in this section you should be able to use your router as a DHCP server. Check this option! And of course you have to uncheck the box if you want to turn it off!
4. Next, you need to select the address where DHCP starts assigning IP addresses – usually x.x.x.100 (the actual example is 192.168.1.100 or 10.0.0.100) is a good guess. If you are not sure which address to use, there is often a default number that you can just leave.
5. You must then enter the number of the destination IP address. Make sure that the last block of numbers does not exceed x.x.x.254 (e.g. 192.168.1.254 or 10.0.0.254).
So, if you select x.x.x.100 as 1. IP and x.x.x.254 as the destination IP, your router can assign IP addresses to 155 devices – with any luck, that’s enough for you!
6. Sometimes you have to install the DNS. If this is the case, it is better to choose the version supplied by your supplier. You can also use the 8.8.8 or 184.108.40.206 servers, which are known public DNS servers.
7. The last step is to configure your devices, where DHCP can automatically set your IP address. This feature is usually enabled by default, but you can check the local connection settings on your Windows device to see if DHCP is enabled.
Is DHCP safe? Should I turn it off?
The reason DHCP is disabled is that each device connecting to your network is automatically assigned an IP address. This way you can of course connect this device to your network.
However, disabling DHCP means that only devices that you assign a static IP address can connect to your network. This means that a network without DHCP can theoretically be more secure than a network without DHCP.
However, this is only really advantageous if you have an open network that does not require a password to log in. If your network is protected by the WPA2 standard, you already have good external security to prevent unwanted people from connecting to your router.
If you decide to disable DHCP for security reasons, you must select an unusual IP address range when configuring your LAN subnet. Since most IP addresses belong to a certain range by default, they can still be easily guessed by hackers unless you change them.
I hope you found our DHCP guide useful!
In general, DHCP is a very useful router feature that can save you time and effort when it comes to allowing devices to connect to your network.
Although the use of a static IP address has specific advantages in certain situations, DHCP is the right choice for most people.
If you have any questions, you can ask them in the comments section below.
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