Syslog Daemon IP Embedding for One-Way Data Link Security
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Solution Overview
Problem
Conventional network security devices, such as firewalls, fail to provide reliable protection against unauthorized data disclosure in high-security networks, and existing one-way data transfer systems struggle to transmit syslog messages effectively across one-way data links due to restrictions on IP information transfer.
Innovation Solution
A special syslog daemon on the send node inserts the IP information of the syslog sender into the body of the syslog message before routing it through a one-way data link, allowing the message to be transmitted while ensuring that only the data portion is transferred, maintaining unidirectional security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional firewalls are used for network security, then data protection is provided, but reliable protection against unauthorized data disclosure is not achieved
Solution Approach 1:
The patent introduces a one-way data link as an intermediary component between the internal network and external network. This intermediary physically enforces unidirectional data flow, allowing data to pass from internal to external networks while completely blocking any reverse data flow, thus providing reliable protection against unauthorized data disclosure that conventional firewalls cannot achieve
Solution Approach 2:
The patent extracts and removes the IP information field from the data structure before transmission through the one-way link. By taking out the identifying information that could potentially reveal internal network topology or enable targeted attacks, the system maintains data protection reliability while preventing harmful factors associated with IP address exposure
2Object-affected harmful factors
If one-way data transfer systems are used to ensure security, then unauthorized data disclosure is prevented, but syslog message transmission fails due to IP information transfer restrictions
Solution Approach 1:
The patent segments the syslog message into two parts: the body content and the IP information. The body is transmitted through the one-way link while the IP information is extracted and handled separately. This segmentation allows the system to maintain security by preventing IP address transmission through the one-way link while preserving syslog functionality by embedding necessary identification within the message body
Solution Approach 2:
The patent moves the IP information from the traditional network layer (where it would be transmitted through the one-way link) to the application layer by embedding it within the syslog message body. This dimensional change allows the information to be preserved for tracing purposes without violating the security constraint of the one-way data link
3Object-affected harmful factors
If IP information is removed from syslog messages for security, then unauthorized data disclosure is prevented, but the ability to trace the originator is lost
Solution Approach 1:
The patent creates a copy of the necessary identification information and embeds it within the syslog message body. Instead of transmitting the original IP address through the one-way link, the system copies the essential identifying data and places it in the message content, thereby preserving originator tracing capability while preventing unauthorized data disclosure through the restricted transmission channel
Data Source
AI summary
A special syslog daemon on a send node, wherein the send node is connected to a receive node by a one-way data link, the special syslog daemon configured to receive a syslog message from a syslog sender, insert a portion of IP information of the syslog sender in the body of the received syslog message and route the resulting syslog message to the one-way data link so that the resulting syslog message can be sent through the one-way data link to a syslog receiver communicatively coupled to the receive node. The present invention resolves the potential conflict between syslog and one-way data transfer applications that are configured to remove IP information from data prior to its passage through a one-way data link, thereby leading to a further enhancement of network security through their combination.