Gateway Port Translation for Network Segmentation
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Solution Overview
Problem
Current security technologies for managing network communications between computing systems are cumbersome and difficult to deploy, especially in providing a cohesive inter-computing system security policy without modifying applications or networking device configurations.
Innovation Solution
A gateway service that identifies and translates destination port values based on group identifiers, allowing secure packet forwarding through a shared port, thereby limiting the number of open ports and maintaining security across multiple communication groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple open ports are provided for different communication groups, then communication versatility is improved, but security management complexity increases
Solution Approach 1:
A gateway service is introduced as an intermediary between computing systems and communication groups. The gateway receives packets on a single port, translates destination ports based on group identifiers, and forwards to appropriate communication groups. This mediator approach allows multiple communication groups to be accessed through one port, reducing security management complexity while maintaining communication versatility.
Solution Approach 2:
The system changes the port parameter dynamically based on the group identifier in each packet. Instead of having fixed multiple open ports, the gateway service translates a single destination port value to different communication group identifiers, effectively changing the port parameter according to the specific communication request. This reduces the number of open ports while maintaining access to multiple communication groups.
2Reliability
If port translation service is implemented, then security is improved by limiting open ports, but device complexity increases
Solution Approach 1:
The gateway service performs multiple functions: receiving packets, identifying group identifiers, translating destination ports, and forwarding to appropriate communication groups. By consolidating these multiple security and routing functions into a single gateway service, the system improves security through port limitation while avoiding the need for multiple separate security devices or complex configurations across multiple systems.
Data Source
AI summary
Described herein are systems, methods, and software to enhance gateway security for multiple communication groups. In one implementation, a method of operating a gateway service includes identifying a data packet received from a first computing system, wherein the data packet comprises a first destination port value. The method further includes, identifying a group identifier within the data packet, wherein the group identifier associated with a communication group of the plurality of communication groups, translating the first destination port value to a second destination port value based on the group identifier, and forwarding the data packet with the translated second destination port value.