Configuring Web Application Firewall

Overview

A Web Application Firewall filters, monitors, and blocks HTTP traffic to and from API proxies. While normal firewalls serve as a safety gateway between servers, a WAF helps to filter the content of specific web applications.

To integrate WAF functionality in the Fiorano API Gateway server, configure WAF to a Resource in the API Project.

Enabling WAF

To enable WAF to a Resource in an API project, perform the following actions:

Create an API Project.
Go to the Resource Configuration.
Go to WAF Configuration.
Select the Enable Web Application Firewall (WAF) option.

Configuring WAF

To configure WAF,

Provide the filter Class name in the WAF Filter Class text field.

org.webcastellum.WebCastellumFilter

org.owasp.esapi.waf.ESAPIWebApplicationFirewallFilter

Provide the filter configuration in the WAF Filter Configuration section. Click the Add button to add additional attributes.

webcastellum WAF

Name	Value
LogVerboseForDevelopmentMode	true
Debug	false
ProductionMode	false
ExtraDisabledFormFieldProtection	false
ParameterAndFormProtection	false
QueryStringEncryption	false
SecretTokenLinkInjection	false
BlockNonLocalRedirects	false
ForceEntranceThroughEntryPoints	false
HandleUncaughtExceptions	true
RuleFileReloadingInterval	60
RuleLoader	org.webcastellum.FilesystemRuleFileLoader
AttackLogDirectory	{WAF_LOGS_DIR}
RuleFilesBasePath	{WAF_RULES_DIR}
FlushResponse	false

ESAPI WAF

Name	Value
configuration	{WAF_RULES_DIR}\restrict-source-ip-policy.xml

Click the Add rules button to add the zip file which contains the configured rules files and click the Upload button to attach the files to the resource.

Sample rules can be found at:

Webcastllum

<Installer>\APIManagement\samples\waf\webcastellum

ESAPI

<Installer>\APIManagement\samples\waf\ESAPI
Save and deploy the API project.