Configuring a Web Application Firewall (WAF)

WAF is an additional setting for the application gateway. It's used to increase the security of applications behind the application gateway, and it also provides centralized protection.

Getting ready

To enable a WAF, we must set the application gateway to the WAF tier. To do so, we must do the following:

1. In the Application gateway pane, go to Web application firewall, under Settings. Change the Tier selection from Standard V2 to WAF V2 and select Save:
   

Figure 12.23: Setting the application gateway to the WAF V2 tier

How to do it...

After the application gateway is set to WAF, we can enable and set the firewall rules. To do so, we must do the following:

1. In the Application gateway pane, go to Web application firewall, under Settings, and enable Firewall status. After we set Firewall status to Enabled, a new set of options will appear:
   

   Figure 12.24: Enabling a WAF for our application gateway

2. We must...