All hardware and virtual versions of the Citrix NetScaler application delivery controller (ADC) can be configured and managed from the Citrix NetScaler command line interface or the web-based configuration utility. All features of most NetScaler features can be configured using either of these tools. The Citrix Application Firewall is an exception: not all application firewall configuration tasks can be performed at the command line. Inexperienced users also find the configuration utility easier to use. In particular, the application firewall wizard considerably reduces the complexity of configuring the application firewall. Unlike most NetScaler wizards, the application firewall wizard can serve as your primary interface to the application firewall.
The command line interface is a modified UNIX shell based on the FreeBSD bash shell. To configure the application firewall from the command line interface, you type commands at the prompt and press the Enter key, just as you do with any other Unix shell. For instructions for using the command line interface, see "Command Reference."
The configuration utility is a web-based GUI interface to the ADC. The application firewall configuration section is found under. Figure 1 shows the navigation pane expanded to display the application firewall screens, and in the detail pane the main application firewall screen.
The configuration utility has two main areas on all screens. The panel on the left, called the navigation pane, contains a navigation tree, with which you navigate to the screens on which you configure the features that are installed on your appliance. The screens to which you navigate appear to the right of the navigation pane, in the details pane.
When you access the configuration utility, the details pane displays the System Overview screen. If, in the navigation pane, you click plus sign next to the application firewall folder, the Application Firewall node expands to include the main application firewall elements that you can configure. If you click the first element, Profiles, the details pane displays the configured profiles, if any profiles have been configured. At the bottom of the details pane, you can click Add to configure a new profile. Other buttons at the bottom of the details pane are grayed out until you select an existing profile. Screens for the other elements work in the same way.
If, instead of expanding the application firewall node, you click the node itself, the details pane displays different options, one of which is the application firewall wizard, as shown in Figure 1. Citrix recommends that you use the wizard for initial configuration, and many users use it almost exclusively. It includes most of the functionality that is available elsewhere in the configuration utility.
For information and instructions on accessing the configuration utility, see "Citrix NetScaler Getting Started Guide."