On a Linux system, IP addresses are automatically assigned by DHCP servers. They are dynamic, and often changing, every time you reboot your system. If the system is a dedicated or virtual server administering remotely, for example, for this it is necessary to have (as a recommendation) a static IP address.

To configure an IP address on a Red Hat system, enter the command nmcli
which will list the network connections and devices in the system

$ nmcli dev status
DEVICE      TYPE      STATE        CONNECTION
wlo1        wifi      connected    Comtrend7FB9
virbr0      bridge    connected    virbr0
enp3s0      ethernet  unavailable  --
lo          loopback  unmanaged    --
virbr0-nic  tun       unmanaged    --

Next, you need to change the network interface. To do this, edit the file in the directory /etc/sysconfig/network-scripts
which is an open interface. In a line called“BOOTPROTO=dhcp» needs changes to BOOTPROTO = static».
Also, the IP address itself must be added to this file. For example, this interface will be called IPCONT211

After making changes, run the program systemctl restart NetworkManager to save the changed settings.

To date, there are two types of IP addresses: it is dynamic and static. We will try to explain what is the difference between them.

Dynamic IP Address

In most cases, the IP addresses of computers, smartphones, tablets and other devices are dynamic by default. Dynamic IP address is more secure to use; it makes it difficult for intruders to track a computer on the network.
In most cases, the IP addresses of computers, smartphones, tablets and other devices are dynamic by default. Dynamic IP address is more secure to use. Dynamic still means as “changeable”, or “unstable.” It is always in the process of change and used for a limited period of time.

Dynamic IP addresses are used in large networks, where computers are often reconfigured, or where the number of IP addresses available for distribution to computers is limited.

Dynamic IP address is more convenient to use in cases when working with file exchanges. Often they introduce restrictions, for example, you will not be able to download more than 1-2 files within 4-6 hours. But using a dynamic address, after downloading it will be enough for you to simply reload the router and you can start downloading the next file.

Static IP Address

Since you can count on a static IP address for an infinite period of time, some network software needs a static IP address. ISPs typically charge extra for a static IP address. Your provider may not want to provide static IP addresses to your customers at all.

This is the type of IP address that is permanent. Its difference from the dynamic address is that it is assigned to your login and remains constant and unchanged until the service is turned off. Since you can count on a static IP address for an infinite period of time, some network software needs a static IP address. ISPs typically charge extra for a static IP address. Your provider may not want to provide static IP addresses to your customers at all.
This type of address has a great advantage: For example, when logging in to Internet banking sites and other resources that require maximum protection for your information, it is possible to link your account to a specific IP. And even if third parties find out your password, they are unlikely to be able to access secret data, as this will be possible only from your IP.