WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

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SIP proxy The SIP proxy design is based on the HTTP proxy architecture. The SIP proxy extends the HTTP proxy features. It can be considered a peer to the HTTP proxy. Both the SIP and the HTTP proxy are designed to run within the same proxy server and both rely on a similar filter-based architecture for message processing and routing. The SIP proxy server initiates communication and data sessions between users. It delivers a high performance SIP proxy capability that you can use at the edge of the network to route, load balance, and improve response times for SIP dialogs to back end SIP resources. The SIP proxy provides a mechanism for other components to extend the base function and support additional deployment scenarios. The SIP proxy is responsible for establishing outbound connections to remote domains on behalf of the back end SIP containers and clients that reside within the domain that is hosted by the proxy. Another important feature of the SIP proxy is its capability to protect the identity of the back end SIP containers from the SIP clients. WebSphere Application Server Proxy provides many functions that Web server and plug-in have but it is not a full replacement because it does not have Web serving capabilities. (Static content can be served from the proxy cache) If the Web server is used only for load balancing and routing with session affinity, WebSphere Application Server Proxy can take the place of the Web server. WebSphere Application Server Proxy is not considered a secure proxy for demilitarized zone (DMZ) deployments. For example, it cannot bind to protected ports without being a privileged user on most operating systems and users cannot be switched after binding. WebSphere Application Server Proxy must stay in the intranet/secure zone. DMZ Secure Proxy Server As the WebSphere Application Server Proxy is not ready for a DMZ, WebSphere Application Server V7.0 ships a DMZ-hardened version of WebSphere Application Server Proxy. The DMZ Secure Proxy Server comes in a separate install package that contains a subset of WebSphere Application Server Network Deployment and provides new security enhancements to allow deployments inside of a demilitarized zone (Figure 3-11 on page 69). 68 WebSphere Application Server V7.0: Concepts, Planning, and Design
Firewall DMZ Secure Proxy Server DMZ Figure 3-11 DMZ secure proxy simplified topology Integrated Solutions Console Application Application Server Application Server Server Web Server Web Server Web Server Secure back-end The DMZ Secure Proxy is designed to improve security by minimizing the number of external ports opened, and running as an unprivileged user when binding to well-known ports. It can be managed locally or remotely using the job manager console. Note: HTTP and SIP protocols supported by WebSphere Application Server Proxy are also supported with DMZ Secure Proxy Server. For a sample topology using the DMZ Secure Proxy Server as reverse proxy, see 5.3.4, “Reverse proxy topology” on page 154. Firewall Chapter 3. WebSphere Application Server concepts 69
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WebSphere Application Server V7.0:
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Note: Before using this information
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2.2 Tivoli Directory Server . . . .
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5.1.3 Security . . . . . . . . . .
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7.9 WebSphere performance tools . .
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11.4 Web services architecture . .
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14.9.7 Java Command Language (JACL)
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xiv WebSphere Application Server V7
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Trademarks IBM, the IBM logo, and i
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xviii WebSphere Application Server
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Tze Puah is an Application Infrastr
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Become a published author Join us f
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1.1 Java Platform Enterprise Editio
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1.2 WebSphere Application Server ov
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1.2.2 Evolving Java application dev
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Runtime provisioning WebSphere Appl
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WebSphere Application Server suppor
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Installation Factory WebSphere Appl
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WebSphere Application Server for z/
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These features become more importan
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4.7.3 Backup plan 4.7.4 Recovery pl
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120 WebSphere Application Server V7
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5.1 Topology selection criteria 5.1
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Load balancing Use load balancing t
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5.1.3 Security 5.1.4 Maintainabilit
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Scaling Scaling represents the abil
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Both of these options are valid app
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- You will more likely have to call
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5.2 Terminology 5.2.1 Load balancer
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WebSphere Application Server Proxy
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WebSphere Application Server V7.0 s
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5.3.1 Stand-alone server topology T
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► Increased security by using a D
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User Outside World DMZ Internal Net
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Installation and configuration The
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The Web server plug-in distributes
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System D Perform the following step
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primary Load Balancer through heart
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5.3.4 Reverse proxy topology User R
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Installation and configuration: Edg
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System B Perform the following step
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System A 1. Copy the file targetTre
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Note: Each Load Balancer installati
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Disadvantages The major disadvantag
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5.3.6 Heterogeneous cell z/OS DMGR
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Disadvantages The disadvantages of
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Advantages This topology provides t
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The topology in Figure 5-11 shows a
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3. Create an application server pro
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Disadvantages There are no real dis
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This document does not describe the
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When you choose the platform or pla
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6.5 Naming conventions Naming conve
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Forwarding method Each of the avail
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The following examples outline the
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What is next? You can start the Web
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Assume that the application server
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6.8.2 Distributed server environmen
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Assume that the application server
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► Slip install Slip install means
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Deployment Manager . . . Deployment
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Installation factory The Installati
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Note: The IBM Update Installer for
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Profile types The types of profiles
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► Secure proxy profile A secure p
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Deployment manager profile options
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Typical settings Advanced options D
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Application server profile options
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Typical settings Advanced options Y
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Typical settings Advanced options D
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6.9.6 Naming convention The purpose
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If each application server will hos
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There are some specific considerati
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6.10 IBM Support Assistant IBM Supp
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7.1 What is new in V7.0 IBM WebSphe
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7.2.1 Scaling overview Note: In ord
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Note: IBM HTTP Server for z/OS offe
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7.3.2 System tuning To measure the
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For the DMZ secure proxy, there are
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Messaging connection pool When usin
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Workload management is a WebSphere
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For more details about Web server p
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7.5 High availability 7.5.1 Overvie
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7.5.4 Data availability In a WebSph
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7.5.6 Maintainability Software-base
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This time-out can be configured in
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High availability groups High avail
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7.6.1 Edge caching In this section
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7.6.3 Data caching Dynamic caching
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7.7 Session management 7.7.1 Overvi
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The following sections outline the
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Local sessions (non-persistent) If
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► Application Configuration at th
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7.9 WebSphere performance tools Whe
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Monitoring a system naturally chang
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for tuning and performance. The adv
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synthetic transactions or to track
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For more information about ARM, rev
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Planning item Plan for clustering:
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8.1 What is new in V7.0 The followi
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► Enterprise JavaBeans (EJB) thin
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Disciplines Business Modeling Requi
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► Support for WebSphere Applicati
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The WebSphere rapid deployment set
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To group and sort resources in the
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8.5.3 Subversion CVS has the follow
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8.6 Automated build process The maj
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8.8 Automated functional tests Auto
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Development environment Usually, ea
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The system test environment can als
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► Environment-specific This categ
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A lesser known, but better, approac
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Developers need to consider the fol
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► You can use the WebSphere Appli
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9.1 What is new in V7.0 The followi
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9.2 Administrative security We sugg
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9.3.1 Integrated Solutions Console
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JMX, a Java specification part of J
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9.4 Automation planning To emphasiz
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Consider whether to use automatic s
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Some thought needs to be put toward
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Note: A common source of confusion
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File synchronization File synchroni
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9.7.1 Log and traces ► Check the
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9.7.3 Backing up and restoring the
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9.8 Planning checklist for system m
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10.1 Messaging overview: What is me
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10.3.1 Messaging provider standards
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► WebSphere Application Server V5
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If the bus member is a cluster of a
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10.4.2 Choosing a messaging topolog
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With some additional configuration,
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Figure 10-6 illustrates how a servi
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WebSphere MQ server provides the fo
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Other roles that affect permissions
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There is a trade-off between reliab
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11.1 Introduction to Web services W
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11.2.1 What was in Feature Pack for
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► Do you need to promote your bus
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Before we look at the architecture
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Message exchange patterns Some tran
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Workflow-oriented A workflow messag
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Service Consumer Figure 11-8 Compos
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11.5.1 Supported standards WebSpher
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In this type of situation, companie
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Note: Dynamic Caching is only inclu
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12.1 What is new in V7.0 This secti
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Security policy A security policy i
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These components consist of the fol
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The authentication mechanism in Web
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There are some benefits in using Ke
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Lightweight Directory Access Protoc
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12.2.2 Authorization Trust associat
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Fine-grained administrative securit
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that is involved in an Internet tra
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Users Fred Sally Mike Figure 12-4 U
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Note: Be aware that some configurat
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WebSphere Application Server provid
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Scenario 3: Using a z/OS security p
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Resources For a good overall refere
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13.1 Available feature packs The cu
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The included extensions to Ajax are
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Another good source of information
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Figure 13-2 Key SCA concepts ► Pr
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► SCA Web Services Binding V1.0 T
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14.1 WebSphere Application Server s
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14.1.3 Cell component—daemon WebS
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While WebSphere Application Server
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Cell Deployment Manager Control reg
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14.1.6 Workload management for WebS
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Request Platinum customer Request G
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Availability The concept of a separ
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Note: While the 31-bit mode can sti
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► MEMLIMIT setting in the JCL or
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14.4.3 HFS structure The HFS struct
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Cell01 Core Group Node01 Deployment
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14.5.4 XCF—alternative protocol o
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Member notification To notify the o
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14.6 z/OS Fast Response Cache Accel
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Perform the following steps to conf
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Note: By default the FRCA cache is
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14.6.4 Resource Access Control Faci
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The results of this can be as follo
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Note: If the request exceeds the sp
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garbage collection. The garbage col
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14.8.3 Function Modification Identi
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Note: For detailed information abou
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The set of tools is available for W
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14.9 System programmer consideratio
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Intelligent runtime provisioning Th
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Shared class cache This section con
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Because this is a JVM technique tha
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The REUSASID parameter is automatic
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14.10.1 Planning considerations Tab
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Various tools are available to ease
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15.1 Infrastructure migration consi
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15.1.1 Scripting migration Since We
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15.1.6 Mixed cell support To ease t
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Automated migration with mixed vers
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15.4 Messaging migration considerat
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15.7 WebSphere Application Server f
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MMT is intended for use by a system
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5. When you have successfully enter
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Example 15-1 Migration management c
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Tip: The BBOWMG3x job is long runni
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For more information about how to c
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Topology review Client Network (10.
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Advantages Disadvantages Sample top
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► In order to show the new securi
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Installing HTTP Servers (servers B
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Creating Job manager (server E) The
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d. On the Integrated Solutions Cons
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After clicking OK, we got the answe
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One WebSphere Application Server no
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Figure A-10 Additional parameters F
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Figure A-14 Job finished Summary We
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Online resources ► WebSphere Appl
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WebSphere Application Server V7.0:
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