Intercept and Redirect Module for PAT Scalability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Port Address Translation (PAT) systems face scalability issues due to computationally intensive encoding/decoding operations required for deriving port-bundle host keys, making it difficult for network systems to handle multiple clients efficiently.
Innovation Solution
Implementing an intercept and redirect module in network devices to identify clients and insert client identifiers into response messages, allowing for efficient client identification and redirection to a portal without the need for complex formula-based encoding/decoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex formula-based encoding/decoding operations are used to derive port-bundle host keys, then client identification accuracy is improved, but computational intensity increases making the system difficult to scale
Solution Approach 1:
The system performs preliminary encoding of the client identifier into a port-bundle host key when the client initially connects to the network. This pre-computed key is then used for subsequent packet processing without requiring complex decoding operations, thereby maintaining identification accuracy while reducing computational intensity for ongoing operations.
Solution Approach 2:
Instead of performing complex formula-based decoding operations on every packet, the system creates a simplified copy or representation of the client identifier in the form of a port-bundle host key. This copied representation can be processed much more efficiently while still enabling accurate client identification.
2Reliability
If port-bundle host key derivation is performed for every packet, then client identification reliability is improved, but processing time increases
Solution Approach 1:
The port-bundle host key is derived in advance when the client establishes connection, rather than being computed for every packet. This preliminary action ensures reliable client identification while avoiding the time penalty of repeated complex calculations.
Solution Approach 2:
The system dynamically adapts its processing approach by using the pre-derived port-bundle host key for rapid packet processing while maintaining the ability to re-derive the key if needed. This dynamic approach balances reliability with processing speed.
Data Source
AI summary
In an example embodiment, a method is provided to receive a request message. A client that transmitted the request message then is identified. Here, the client is associated with a client identifier. The client identifier is inserted into a response message, and this response message includes a redirect to a portal. The response message then is transmitted.