ZXTM: Deploying Microsoft IIS
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Microsoft IIS forms the basis for web applications built on .Net and other Microsoft technologies.
The deployment guide describes Zeus' best practices when load-balancing and managing traffic to applications hosted on Microsoft IIS.
It covers basic configuration of ZXTM, issues around L2 IP transparency and SSL certificates and offload.
Why manage your network traffic using ZXTM?
- Improved Availability: ZXTM is able to make your IIS deployment more reliable and available, reducing downtime due to routine maintenance and unanticipated failures.
- Better performance: The unique application acceleration features will improve the end-user performance of IIS, and increase its capacity, giving you a much better return on your software and infrastructure investment.
- More secure: Acting as a ‘gatekeeper’, ZXTM delivers improved security as a line of defence for IIS, protecting against flash floods and inspecting and filtering all incoming and outgoing traffic.
- Simplified management: Complete traffic inspection and a powerful configuration language let you build sophisticated traffic management policies to manage traffic across large clusters, reduce operational costs and build an efficient, flexible and highly scalable application infrastructure.
Customer References
Customers who have deployed ZXTM to manage traffic to IIS include ...
In more detail
Reliability
ZXTM provides a single point-of-entry to a cluster of IIS servers. With a combination of passive and active health monitoring and performance measurements, ZXTM can route incoming requests to the fastest-responding servers and avoid servers that are failed or underperforming.
Request rate shaping ensures that your IIS servers can never be overloaded with requests, and advanced Session Persistence reliably pins users' sessions to individual servers for maximum reliability.
Acceleration
ZXTM's Application Acceleration capabilities improve the end-user experience and increase the capacity of your IIS servers to handle transactions. Indirectly, it also increases their resistance to denial of service attacks and reduces downtime due to flash floods and unexpected high traffic volumes.
ZXTM improves application performance by:
- Reducing the number of concurrent connections and transactions the IIS server must handle, using a combination of network optimizations: low-level TCP offload, TCP acceleration, HTTP connection multiplexing and HTTP connection reuse. ZXTM changes the environment that the GENERIC server operates in, from large numbers of slow, remote clients to a very small number of fast local ones.
- Reducing the total number of transactions the IIS server processes by sophisticated context-sensitive content caching.
- Offloading compute-intensive tasks such as SSL decryption, content compression and XML processing onto ZXTM’s high performance software engines.
- Utilizing performance-sensitive load balancing, routing each transaction to the IIS server best suited to handle it (based on cache history, current server performance and current server workload).
Security
Total server isolation, request and response scrubbing, request validation and request rate shaping help to place your IIS servers in as secure an environment as possible, protecting them from direct attacks from internet clients, invalid or malformed HTTP requests and malicious or incidental flash floods that would severely impact the levels of service you provide.
Management
ZXTM's advanced request routing and manipulation, driven by a fully programmable TrafficScript rules engine, gives you full flexibility to manage both your network traffic and server resources.
Connection draining makes application upgrades a snap. You can safely take an IIS server out of service without interrupting any ongoing transactions or sessions for routine maintenance or redeployment.
Technical Notes
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