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Both network and Web performance are topics of major concern to businesses who increasingly depend on the Internet as a business channel. As CDNs (Content Delivery Networks) become a popular choice for both improving Web performance and being able to serve richer Internet content, network managers and network engineers need to learn about the underlying technologies like caching, load balancing and the use of firewalls which make increased performance possible. Content switching is the umbrella term for the technologies (web caching and re-direction, server load balancing, and firewalls to protect your content from unauthorized modification) which make Content Delivery Networks possible. The Authors explain these key technologies that are used to improve Web performance and will allow companies to serve richer web content securely. A running example throughout the book shows how these technologies are used in one company to optimize its Web site.
Understanding Application Layer Protocols
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1. Introduction to Content Switching.
The Evolution of Layer 2 and Layer 3 Networks. Summary.
The OSI Seven Layer Model—What Is a Layer? Switching at Different Layers. Understanding Layer 4 Protocols. Transport Control Protocol (TCP). User Datagram Protocol (UDP). Virtual Router Redundancy Protocol (VRRP). Summary.
HyperText Transfer Protocol (HTTP). File Transfer Protocol (FTP). Real Time Streaming Protocol (RTSP). Secure Sockets Layer (SSL). Summary.
Virtual Services and Application Redirection. Resources and Real Servers. Frames, Packets, and Sessions. Deep Packet Inspection. Summary.
Why Load Balance Servers? Topologies of Server Load Balancing. Layer 4 Load Balancing Metrics. Server Health Checking. Summary. Case Study Layer-4 Server Load Balancing.
What Is Layer 7 Server Load Balancing? Why Use Layer 7 Server Load Balancing? Dealing with Layer 7 Traffic. HTTP URL Parsing and Load Balancing. HTTP Header Load Balancing. HTTP Cookie Load Balancing. Load Balancing FTP. Load Balancing DNS at Layer. Load Balancing RTSP Streaming Media. Summary. Case Study: Content-Aware Server Load Balancing.
Internet Service Providers—Proxying and Traffic Volumes. IP Address Hashing. Cookie-Based Persistence. SSL. Summary. Case Study: Persistence.
The Requirement for Application Redirection. VIP-Based SLB vs Application Redirection. Web Cache Redirection (WCR). WCR. Security Redirection. Router/Link Load Balancing. Summary. Case Study: Application Redirection.
Why Load Balance Firewalls and VPN Switches? Firewall Overview. Deploying Firewall Load Balancing. Policy-Based Firewall Load Balancing. VPN and MAC Persistence. Summary. Case Study: Firewall and VPN Load Balancing.
Typical Layer 2 and Layer 3 Architecture Considerations. Why Content Switching Is Different. What Makes a Good Content Switch? Different Approaches. Where to Next? Associated Hardware. Summary.
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