Browsing by Author "Chang, Tsao-Jiang"

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IDENTIFICATION AND ADMINISTRATION SYSTEM APPLIED TO PEER-TO-PEER GATEWAY AND METHOD FOR THE SAME
(2008-06-12)
LIN, Po-Ching
;
Tsai, Meng-Fu
;
Chang, Tsao-Jiang
;
Lin, Ying-Dar
;
Lai, Yuan-Cheng
An identification and administration system applied to P2P gateway and a method for the same are proposed. The system is installed in a kernel space, and a plug-in kernel module is in the kernel space to finish preprocessing and application processing of packets on the kernel space without the need of copying data to the user space for processing. Moreover, a connection cache is provided in the kernel space to process source/destination IP addresses, connection ports and protocol identifiers of all packets to recognize and then block identical request packets in reconnections. Therefore, the throughput of content-level security gateway can be increased, and the processing efficiency of packets can also be enhanced.
kP2PADM: An In-Kernel Architecture of P2P Management Gateway
(2008-10-01)
Lin, Ying-Dar
;
Lin, Po-Ching
;
Tsai, Meng-Fu
;
Chang, Tsao-Jiang
;
Lai, Yuan-Cheng
Managing increasing traffic from Instant Messengers and P2P applications is becoming more important nowadays. We present an in-kernel architecture of management gateway, namely kP2PADM, built upon open-source packages with several modifications and design techniques. First, the in-kernel design streamlines the data path through the gateway. Second, the dual-queue buffer eliminates head-of-line blocking for multiple connections. Third, a connection cache reduces useless reconnection attempts from the peers. Fourth, a fast-pass mechanism avoids slowing down the TCP transmission. The in-kernel design approximately doubles the throughput of the design in the user space. The internal benchmarks also analyze the impact of each function on performance.