1. A Stream-based Mail Proxy with Interleaved Decompression and Virus Scanning
Student: Su-Hao Chen 學生：陳思豪
Advisor: Ying-Dar Lin 指導教授：林盈達
Design Guidelines:
Interleaved processing without file system access
Single process concurrency
Shared library without IPCs
Supporting various compression formats:
UNIX compress, gzip, zip, 7zip,
rar, bzip2, lha, self-extraction, etc.
Mail attachment processing
Benchmarking:
External
throughput
latency
Internal
space requirement
processing time of each stage
Modules in stream-based mail proxy
Higher throughput
Lower space requirement

2. A Novel Gateway Architecture for Managing Dynamic Port Peer-to-Peer Traffic
Student: Meng-Fu Tsai 學生：蔡孟甫
Advisor: Ying-Dar Lin 指導教授：林盈達
New architecture
Conventional proxy
P2P Proxy
Connection classification
By port number
By application signature
Traffic redirection
Two connections between the proxy and either end of peer
One connection between two peers. The proxy captures packets to the user space for verdict.
Packet reassembly
Reassembled from the TCP/IP stack
Reassembled by the proxy
Synchronization between proxy and the kernel
None
Dual queue synchronization
Dual queue architecture
No head-of-line blocking
Percentage of processing time of
each component
Higher throughput