Suppressing AAA Access Requests for Rejected Subscribers
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Solution Overview
Problem
Existing network systems consume excessive resources when handling rejected subscriber end stations due to repeated AAA access-request messages, leading to inefficiencies and potential security vulnerabilities.
Innovation Solution
Implementing a suppression mechanism in network elements and AAA servers to temporarily halt additional AAA access-request messages for rejected subscriber end stations, using status information or access-reject messages to trigger this suppression, thereby conserving execution resources and preventing unnecessary processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network element processes each subscriber session-request message by transmitting AAA access-request messages to the AAA server, then authentication verification is performed, but excessive CPU resources and execution time are consumed due to repeated processing of rejected subscribers
Solution Approach 1:
The network element performs preliminary action by suppressing additional AAA access-request messages for rejected subscriber end stations before they can consume further resources. When the AAA server returns an access-reject message, the network element proactively prevents subsequent authentication attempts from being processed, thereby conserving CPU resources and execution time while maintaining authentication reliability for legitimate users.
2Reliability
If the network element transmits AAA access-request messages for each session request, then authentication is verified, but excessive network bandwidth is consumed due to repeated messages from rejected subscribers
Solution Approach 1:
The network element extracts and removes the harmful component by suppressing AAA access-request messages for rejected subscriber end stations. This prevents the transmission of unnecessary authentication messages over the network, reducing bandwidth consumption and eliminating the waste of network resources on authentication attempts from unauthorized users.
3Ease of operation
If the network element processes additional AAA access-request messages, then authentication requests are handled, but storage resources are excessively consumed due to repeated processing of rejected subscribers
Solution Approach 1:
The network element takes preliminary action by suppressing additional AAA access-request messages for rejected subscribers before they can consume storage resources. This proactive suppression prevents the accumulation of unnecessary authentication request data in system buffers and logs, thereby conserving storage resources while maintaining ease of operation for legitimate authentication requests.
Data Source
AI summary
A method performed in a network element coupled between a subscriber end station and an AAA server for avoiding AAA processing by at least temporarily suppressing AAA access-request messages for a rejected subscriber end station. The network element receives subscriber session-request messages from the subscriber end station. Subscriber session-request messages include information for verifying an identity that the network element transmits to the AAA server as AAA access-request messages. The network element receives AAA access-response messages corresponding to the AAA access-request messages. Responsive to an AAA access-response message, the network element determines that additional AAA access-request messages should be, at least temporarily, suppressed with regards to the subscriber end station. Responsive to determining, the network element suppresses any additional AAA access-request messages from being transmitted to the AAA server. The suppression of AAA access-request messages conserves execution resources in the network element and the AAA server.