The difference between dynamic and static IP addresses – what you need to know

Learn what an IP address is, how dynamic and static IP addresses work, as well as their advantages and applications.

In today's connected world, the term IP address is constantly present. But what exactly is an IP address? IP stands for Internet Protocol and is the unique label assigned to each device in a network for communication. Here we go through the two main types: dynamic and static IP addresses, their characteristics, advantages, and applications.

What is an IP address?

In home networks, IPv4 addresses, a 32-bit numerical label, are most commonly used. You probably recognize the format 192.168.x.x – it is the standard range for DHCP (Dynamic Host Configuration Protocol) addresses. Have you noticed that IP addresses sometimes change? This is because they are dynamic.

Dynamic IP addresses

A dynamic IP address can change over time. Modern routers are usually on 24/7, which means addresses rarely change. However, if you restart the router, devices may get new addresses. This is handled automatically by DHCP, making dynamic IP addresses ideal for home networks – no manual configuration is required.

Static IP address

Do you need a fixed address for security or remote access? Then a static IP address is the solution. It is permanent and does not change upon restart. Perfect for:

• File servers and domains
• VPN and remote access
• Port forwarding

Static IP is often used in commercial networks and marine systems to provide specific devices with access and increase security.

Potential problems

Configuring static IP addresses requires knowledge. Incorrect settings can make devices inaccessible. Some systems require static addresses to be set via the router, while other devices allow configuration directly in the device. Example: PRO-NDC-1E2K overrides DHCP if a static IP is specified.

Conclusion

For most users, dynamic IP addresses via DHCP are perfectly sufficient. Static IP is best for advanced needs such as remote access and security control – but make sure to document the address and understand the configuration.