28/06/2015Φεβρουάριος 20011 Performance Enhancing Proxies Costas Troulos.

Παρουσίαση με θέμα: "28/06/2015Φεβρουάριος 20011 Performance Enhancing Proxies Costas Troulos."— Μεταγράφημα παρουσίασης:

1 28/06/2015Φεβρουάριος 20011 Performance Enhancing Proxies Costas Troulos

2 28/06/2015Φεβρουάριος 20012 PEP’s Types Layering PEPs Transport Layer PEPs Application Layer PEPs

3 28/06/2015Φεβρουάριος 20013 Key Characteristics Distribution Implementation symmetry Split connections Transparency

4 28/06/2015Φεβρουάριος 20014 PEP Mechanisms TCP ACK Handling TCP ACK Spacing Local TCP Acknowledgments Local TCP Retransmissions TCP ACK Filtering and Reconstruction

5 28/06/2015Φεβρουάριος 20015 PEP Mechanisms (συνέχεια) Tunneling Compression Handling Periods of Link Disconnection with TCP Priority-based Multiplexing Protocol Booster Mechanisms

6 28/06/2015Φεβρουάριος 20016 Implications of Using PEPs End-to-end Argument Security Security Implications Security Research related to PEPs End-to-end Reliability

7 28/06/2015Φεβρουάριος 20017 Implications of Using PEPs (συνέχεια) Asymmetric Routing Mobile Hosts Scalability

8 28/06/2015Φεβρουάριος 20018 PEP Environment Examples VSAT Environments W-WAN Environments W-LAN Enviroments

9 28/06/2015Φεβρουάριος 20019 VSAT VSAT Network Characteristics Long feedback loops Large bandwidth*delay products Asymmetric capacity Outroute/inroute = 400/1 MSS = 1460 -> IP/ACKsIP = 75/1 Good Error Correction Coding

10 28/06/2015Φεβρουάριος 200110 VSAT (συνέχεια) VSAT Network PEP Implementations Focus on TCP performance Improvement Asymetric Distributed Implementation Split Connections (local acks/retrans) VSAT Key differentiators Maximum Throughput Protocols (modifed TCP, Protocol Over UDP Compression Type (focus on Application)

11 28/06/2015Φεβρουάριος 200111 Security Considerations PEP and IPSec