VPN Server Dynamic Exit IP Switching for Blocked Hosts

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Solution Overview

Problem

VPN servers face inefficiencies when their assigned exit IP addresses are blocked by host devices, leading to unnecessary termination and re-establishment of VPN connections, which wastes user and VPN resources.

Innovation Solution

The VPN server dynamically switches to a new exit IP address from a pool when the current one is blocked, optimizing resource usage by maintaining the existing connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the VPN server uses a single exit IP address for data retrieval, then the configuration is simple, but the connection is terminated when the IP address is blocked by the host device

Engineering Contradiction:

Improveconnection stabilityVSAvoidIP address management

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The VPN server dynamically switches from a static single IP address configuration to a dynamic multi-IP address system. When the current exit IP address is blocked, the server automatically selects a different IP address from the available pool, making the system adaptive to blocking conditions and maintaining connection reliability without manual intervention.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of exit IP address from a fixed single value to a variable selection from multiple values. The VPN server monitors the status of the current IP address and switches to alternative IP addresses when blocking is detected, effectively changing the operational parameters to overcome the blocking issue while maintaining connection stability.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the VPN server switches to a new exit IP address when blocked, then connection stability is improved, but the system complexity increases

Engineering Contradiction:

Improvedata retrieval efficiencyVSAvoidIP address pool management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The VPN server pre-configures a pool of available exit IP addresses before needing to switch. When blocking is detected, the server can immediately select from the pre-prepared pool without delay, maintaining productivity. The preliminary setup of the IP address pool eliminates the need for real-time acquisition of new IP addresses, streamlining the switching process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The IP address pool acts as an intermediary layer between the VPN server and the blocked host device. Instead of directly confronting the blocking issue with a single IP, the pool provides multiple intermediate options, allowing the server to route traffic through alternative IPs when one is blocked, thereby maintaining data retrieval efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the VPN connection is terminated and re-established when an IP address is blocked, then a new IP address can be obtained, but user and VPN resources are wasted

Engineering Contradiction:

Improveaccess to blocked contentVSAvoidresource consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The VPN connection remains continuously established while the exit IP address is dynamically switched within the existing connection. Instead of terminating and re-establishing the connection, the server maintains the continuous VPN tunnel and only changes the exit IP parameter, eliminating the resource waste associated with connection teardown and re-setup while still achieving access to previously blocked content.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system segments the IP address selection function from the connection management function. The VPN connection itself remains intact and continuous, while only the exit IP address component is switched when needed. This segmentation allows the beneficial action of obtaining a new IP address without the harmful side effect of connection termination and resource consumption.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250112896A1Optimized utilization of internet protocol addresses in a virtual private network

Publication Date: 2025.04.03 UAB 360 IT

AI summary

A method for configuring a VPN server to receive a first data request to retrieve first data of interest from a first host device; configuring the VPN server to utilize a first exit IP address to transmit a first query for retrieving the first data of interest from the first host device; configuring the VPN server to determine, based on transmitting the first query, that the first exit IP address is blocked by the first host device; configuring the VPN server to suspend, based on determining that the first exit IP address is blocked, utilization of the first exit IP address for retrieving the first data of interest from the first host device; and configuring the VPN server to utilize the first exit IP address to transmit a second query for retrieving second data of interest from a second host device is disclosed. Various other aspects are contemplated.