Wds Server 2008 Configuration Pdf Download
Laverne Levenstein
Jones IT helps you make the most of your technology. We support your networks, servers, and other technology equipment you use to get things done. Just focus on your business, we'll focus on making sure everything works for you.
Having another Web server in this configuration would have little impact on the application server. The application server can coexist with Web servers as long as you change the application server's listening port from the default (port 80) to another port. For more information, see Specifying general server properties.
Many proxies contain extra logging or support for user authentication. Since proxies must understand the application protocol being used, they can also implement protocol-specific security. The proxy machine provides a higher level of audit and security, but it also increases configuration costs and reduces the level of servicebecause a proxy needs to be developed for each desired service.
This solution offers no provision for maintaining application availability in the event of server downtime. A hardware failure on agsrv1, for example, would mean that no users could access the application until the problem was resolved.
While suitable for smaller, intranet applications, this scenario provides no security mechanism for external use by Internet users. No firewall is provided to protect unauthorized access to unsecured LAN resources. And the Intranet security server (pdc1) is not used to authenticate external Internet or extranet users.
In this scenario, a browser on one of the corporate workstations would access the application by connecting to the application server's software Dispatcher (dispatch1) using a browser or a Java application running in the SilverJ2EEClient container. Depending on the load plan, the Dispatcher would reply with an HTTP redirection to one of the available servers in the cluster.
To establish a connection, the client needs to resolve the TCP/IP host name of the target server using standard means. On Windows workstations, for example, the client would request the TCP/IP address of the target server from the WINS (Windows Internet Naming Service) or DNS (Domain Naming Service) server, or perform an NBT (NetBIOS over TCP/IP) broadcast to resolve the name and address. When they are resolved, the client would access the server directly. No subsequent trips to the Dispatcher would be made.
In this load-balanced scenario, administrators are free to take down one or even two of the application servers for maintenance, because the other servers would be available for incoming requests provided that the remaining servers could accommodate the load.
This configuration is flexible: as the number of users grows, the number of servers can expand to accommodate them. The distribution of load across servers means that no one user can cause the server to be a bottleneck for other users in the organization.
In this scenario, the application server (agsrv1) provides Web application services in conjunction with existing static content served from the corporate Web site servers (www1 and www2). The application server (agsrv1) is DNS-registered; so when an extranet user is linked from the Web site to the application logon page (hosted on the application server), the browser knows what route to take in order to connect to the application server. In this case, Internet clients must pass through the firewall (gatekeeper1) in order to gain access to the application server.
To facilitate this connection, the firewall (gatekeeper1) has been configured so that only HTTP traffic on TCP/IP port 80 can pass through to the application server. This way system administrators are assured that the application-sensitive data will not be intercepted by someone other than the end userand that incoming traffic cannot access other corporate resources.
The user accesses the application from a link on the corporate Web site (www1 and www2). A Web server integration (WSI) module has been installed and configured on both Web servers and offers redirection capabilities to the logon page on agsrv1. Once redirected, browsers will establish a connection to the application server.
Configuring the application server for use with the existing network was a simple case of adding a policy to the firewall configuration (for example, allow HTTP traffic to pass to agsrv1 on TCP/IP 80 and log all activity).
The figure below shows an example of a large-scale Internet application served from a cluster of application servers. Internet users access the application using links from the two Web servers (www1 and www2) located outside the firewall (gatekeeper1).
In order to implement transparent session-level failover and reduce overall DNS and firewall administration, the system administrators install a third-party hardware dispatcher that supports DNS masking, as opposed to using the application server's software dispatcher. This way traffic to all application servers can be localized to a single TCP/IP address and host name on the Intranet (www3). In addition, with this type of device only one TCP/IP address and host name have to be DNS registered, as opposed to four machines when using the application server's software dispatcher (dispatch1, agsrv1, agsrv2, and agsrv3).
When any incoming requests are linked to the Web application itself (on www3), the browser establishes a connection through the firewall to the Web dispatcher. Based on its own load plan, the hardware dispatcher connects the browser to an available server in the cluster. Unlike the application server's software dispatcher, the hardware dispatcher controls the flow of all HTTP traffic. In the event that the server goes down, the dispatcher can automatically route the browser session to a different server in the cluster. Since the dispatcher uses DNS masking, the failure is completely transparent to the end user.
The following figure shows such an example. All Internet traffic is routed through an Internet firewall (gatekeeper1). This firewall allows only Web traffic and Internet mail through to the Demilitarized Zone (DMZ), the area between the two firewalls. For security purposes, all Web and application servers reside in the DMZ.
The Intranet firewall (gatekeeper2) allows e-mail traffic and database connections from the application servers (agsrv1 and agsrv2) to pass through. This way the system administrators can be assured that only e-mail traffic and database calls from the secured DMZ (the application servers) can access corporate information.
External users can be authenticated by obtaining a browser certificate from the certificate server (cert1). The application servers can authenticate these users based on their certificates and encrypt the network traffic from the browser to the application server.
The DNS-masking capabilities of the hardware dispatchers allow for this e-commerce application to run continuously, even in the event that a server fails (the user is automatically rerouted to another server).
The application server can use either cookies or URL rewriting to keep track of the state of multiple Web browser clients. Both cookies and URL rewriting use session IDs. All calls to the server within a browser session will operate under the same session ID. For secure data, authentication occurs once per active session for sessions requiring user authentication.
When a client supports cookies, the application server will use them for session tracking (although it will rewrite the URL when it receives the first request). Once the client returns a cookie, the server will stop rewriting URLs for the client in this session.
The first time a client establishes a session, the URL jsessionid is appended to the URL and is visible to the client user. On subsequent interactions between server and client, the URL rewriting keeps track of the session ID, and the jsessionid is visible only when a user's mouse is held over a link on the page.
If you are deploying your application to a server that is running Nginx, you may use the following configuration file as a starting point for configuring your web server. Most likely, this file will need to be customized depending on your server's configuration. If you would like assistance in managing your server, consider using a first-party Laravel server management and deployment service such as Laravel Forge.
Please ensure, like the configuration below, your web server directs all requests to your application's public/index.php file. You should never attempt to move the index.php file to your project's root, as serving the application from the project root will expose many sensitive configuration files to the public Internet:
This command will combine all of Laravel's configuration files into a single, cached file, which greatly reduces the number of trips the framework must make to the filesystem when loading your configuration values.
Warning
If you execute the config:cache command during your deployment process, you should be sure that you are only calling the env function from within your configuration files. Once the configuration has been cached, the .env file will not be loaded and all calls to the env function for .env variables will return null.
The debug option in your config/app.php configuration file determines how much information about an error is actually displayed to the user. By default, this option is set to respect the value of the APP_DEBUG environment variable, which is stored in your application's .env file.
WarningIn your production environment, this value should always be false. If the APP_DEBUG variable is set to true in production, you risk exposing sensitive configuration values to your application's end users.
aa06259810