复旦大学：《计算机网络 Computer Networking》课程电子教案（PPT课件讲稿）25 security-dosfirewall——Attacks and Countermeasures

复旦大学：《计算机网络 Computer Networking》课程电子教案（PPT课件讲稿）25 Secure Communication with an Insecure Internet Infrastructure

• Internet mobility • TCP over noisy links • Link layer challenges

复旦大学：《计算机网络 Computer Networking》课程电子教案（PPT课件讲稿）22 Queue Management and QoS

• p2p file sharing techniques – Downloading: Whole-file vs. chunks – Searching • Centralized index (Napster, etc.) • Flooding (Gnutella, etc.) • Smarter flooding (KaZaA, …) • Routing (Freenet, etc.) • Uses of p2p - what works well, what doesn’t? – servers vs. arbitrary nodes – Hard state (backups!) vs soft-state (caches) • Challenges – Fairness, freeloading, security, …

• HTTP review and details (more in notes) • Persistent HTTP review • HTTP caching • Content distribution networks

• TCP congestion avoidance • TCP slow start • TCP modeling

• The devilish details of TCP • TCP connection setup and data transfer • TCP reliability • Be nice to your data • TCP congestion avoidance • Be nice to your routers

• TCP flow control • Congestion sources and collapse • Congestion control basics

• Transport introduction • Error recovery & flow control