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360proxy 教程 博客 Static IP and dynamic IP: analysis of differences

Static IP and dynamic IP: analysis of differences

# General

30-12-2023

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In network communications, the IP address is one of the key identifiers of a device for data transmission. Static IP and dynamic IP are two different methods of IP address allocation. They have significant differences in network management, security and connection stability. Let’s compare static IP and dynamic IP in depth to understand their characteristics and applicable scenarios.


IP address allocation method

Static IP:

Fixed: A static IP is manually assigned to a device by the network administrator, and once assigned, the address remains unchanged.

Manual configuration: Users or network administrators need to manually configure each device's IP address, subnet mask, gateway, DNS server and other information.

Dynamic IP:

Dynamic allocation: Dynamic IP is automatically assigned to the device by DHCP (Dynamic Host Configuration Protocol). Every time the device connects to the network, the DHCP server assigns an available IP address.

Automatic acquisition: The device does not need to be configured manually, but automatically obtains the IP address and other network configuration information through DHCP.


Network connection stability

Static IP:

High stability: Since the static IP is fixed, the device always uses the same network identification, and the connection is more stable.

Applicable to servers: For scenarios such as servers and network equipment that need to provide services to the outside world at all times, static IP is more suitable.


Dynamic IP:

High flexibility: Dynamic IP allows the device to obtain a different IP address each time it is connected, giving it a certain degree of flexibility.

Suitable for mobile devices: For mobile devices or scenarios with a large number of connections, dynamic IP is more convenient.


Network management and configuration

Static IP:

Manual configuration management: Administrators need to manually assign IP addresses to each device, and management is relatively cumbersome.

Network planning: Static IP is suitable for scenarios where the network size is relatively small and IP address allocation needs to be precisely controlled.

Dynamic IP:

Automatic configuration management: The DHCP server automatically assigns IP addresses to devices, reducing the administrator's configuration work.

Large-scale networks: Dynamic IP is suitable for large-scale networks, especially when the number of devices changes dynamically.


security considerations

Static IP:

Relatively difficult to steal: Static IP addresses are difficult to obtain dynamically and relatively difficult to be stolen by malicious applications.

Easier to be traced: Due to their fixed nature, static IPs are easier to trace to a specific device.

Dynamic IP:

More difficult to trace: Dynamic IP addresses may change each time you connect, making it relatively harder to trace a specific device.

A certain degree of anonymity: In some scenarios, dynamic IP provides a certain degree of anonymity and helps protect user privacy.


Applicable scene

Static IP:

Server: Used for hosts, Web servers, database servers and other equipment that need to provide services to the outside world at all times.

Specific network requirements: In scenarios where network planning and access permissions need to be strictly controlled.

Dynamic IP:

Large-scale networks: Suitable for networks such as enterprises and schools where a large number of devices are dynamically connected.

Mobile devices: For mobile devices such as smartphones, tablets, etc.


Cost and efficiency considerations

Static IP:

Relatively high cost: Static IP usually requires more manual configuration and management, so it may be higher in cost.

Efficiency is relatively stable: Despite high management costs, static IP performs well in connection stability and network efficiency.

Dynamic IP:

Relatively low cost: Dynamic IP is automatically assigned through DHCP, the management cost is low, and it is suitable for larger-scale networks.

Efficiency and Relatively Flexible: Although the connection may not be as stable as static IP, dynamic IP provides greater network flexibility and adaptability.


The specific advantages are as follows:

Advantages of static IP

Stability and traceability:

Fixed: Static IP is manually assigned to the device by the network administrator. Once assigned, the address remains unchanged, providing higher network connection stability.

Easier to be traced: Due to its fixed nature, static IP is easier to trace to a specific device, which has advantages for scenarios that require clear identity confirmation.

For server and specific network needs:

Service provider: Static IP is suitable for servers that need to provide external services, such as hosts, web servers, database servers, etc.

Network planning: In scenarios where network planning and access permissions need to be strictly controlled, static IP is more suitable.

Security considerations:

Relatively difficult to steal: Static IP addresses are difficult to obtain dynamically and relatively difficult to be stolen by malicious applications, which improves network security.

The cost is relatively high but the efficiency is stable:

High management costs: Static IPs usually require more manual configuration and management, so they can be higher in cost.

Efficiency is relatively stable: Despite high management costs, static IP performs well in connection stability and network efficiency.


Advantages of dynamic IP

Flexibility and suitability for large-scale networks:

Dynamic allocation: Dynamic IP is automatically assigned to the device by DHCP. Each time the device is connected to the network, the DHCP server assigns an available IP address, providing a certain degree of flexibility.

Suitable for large-scale networks: Dynamic IP is suitable for networks such as enterprises and schools where a large number of devices are dynamically connected, and the management cost is relatively low.

Suitable for mobile devices and a certain level of anonymity:

High flexibility: Dynamic IP allows the device to obtain a different IP address each time it is connected, which is suitable for mobile devices or scenarios with a large number of connections.

A certain degree of anonymity: In some scenarios, dynamic IP provides a certain degree of anonymity and helps protect user privacy.

Relatively low cost but flexible in efficiency:

Low management cost: Dynamic IP is automatically allocated through DHCP, the management cost is low, and it is suitable for larger-scale networks.

Efficiency and Relatively Flexible: Although the connection may not be as stable as static IP, dynamic IP provides greater network flexibility and adaptability.

Scenarios where privacy protection is pursued:

A certain degree of anonymity: Dynamic IPs may obtain a different address each time you connect, providing a certain degree of anonymity.

Suitable for scenarios that protect user privacy: For scenarios that pursue higher user privacy protection, dynamic IP is more suitable.


By in-depth understanding of the advantages in these aspects, you can more fully understand the rationality of choosing static IP or dynamic IP in specific scenarios, and make informed network configuration decisions based on actual needs.


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Bill Adkins

Senior Content Editor,Focus on proxy service science and answers,Popularize science and technology to more users through clear blog content.

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