How To Monitor & Troubleshoot Citrix Web Application Firewall?

What Is Citrix Web App Firewall?

Web application firewall (WAF) is a tool for securing web applications by filtering and monitoring HTTP traffic between the web application and the Internet. Cross-site scripting (XSS), file inclusion, and SQL injection are among the most common web application assaults prevented using this technology. As a protocol layer seven defense in the OSI model, a WAF is not meant to protect against all sorts of attacks. Instead, anti-attack mitigation techniques and CNS 320 training are used with other technologies to form an integrated defense against many attack vectors.

A web application firewall (WAF) is a protective barrier between the web application and the Internet. Unlike a proxy server, which uses an intermediate to keep track of the client computer’s identity, a WAF acts as a form of a reverse proxy to keep track of the identity of the server itself.

A WAF is governed by a set of guidelines referred to as policies. These policies are designed to protect the application against vulnerabilities by preventing harmful traffic from reaching it. For example, it is possible to immediately impose rate restrictions during a DDoS assault by updating WAF policies. One of the main benefits of using a WAF is how quickly and easily policy modifications can be performed.

How To Monitor Citrix Web App Firewall?

Security checks in the Web App Firewall advanced safeguards (filters) are meant to catch complicated or unknown attacks on your protected websites and web services. Heuristics, positive security, and other techniques detect attacks that signatures can’t identify. A Web App Firewall profile, which is a collection of user-defined settings, is used to specify which security checks should be used and how to respond when a request or response fails a security check. This is how you set up the security checks in your app. An object of signatures and policies are linked together in a security configuration by a profile.

Each of the Web App Firewall’s twenty security checks has a wide range of attacks that it targets and how difficult it is to set up. The following are the kind of security checks that are conducted:

  1. Standard Security Checks: Checks that cover all aspects of web security regardless of the type of content being protected.
  1. HTML Security Checks: Verifications that look at the requests and answers sent and received by the browser. The same criteria apply to both HTML-based and Web 2.0 sites, blended HTML and XML material.
  1. XML Security Checks: These checks examine XML requests and responses. In addition to Web 2.0 sites, XML-based services are subject to these tests.

The security checks guard against a wide variety of attack vectors, including attacks on operating system and web server software vulnerabilities, SQL database vulnerabilities, design and coding errors in websites and web services, and failures to secure sites that host or have access to sensitive information.

How To Troubleshoot Citrix Web App Firewall?

The appliance’s WAF logs are critical in the event of a security breach. The “VerboseLogLevel” parameter on an Application Firewall profile can be used to do this.

Consider a breach in the security of a website’s traffic. WHEN THE APPLIANCE GETS IT, the ADM server receives information about the traffic, including HTTP headers, log patterns, and pattern payloads. On the Security Insight tab, you can see detailed logs monitored and tracked by ADM.

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Using The Command Line Interface To Configure The Verbose Log Level

Configure the following command to capture detailed WAF logs. Enter the lines in the command prompt:

Set appfw profile <profile_name> – VerboseLogLevel (pattern|patternPayload|patternPayloadHeader)

Example:

set appfw profile profile1 –VerboseLogLevel patternPayloadHeader

The following log levels are available:

● Pattern. Only the design of the violation is logged.

● Payload with away. Violation pattern and 150 bytes of additional field element payload are logged.

● Payload header with away. Logs violation patterns, 150 bytes of payload for different field elements, and HTTP header information.

Conclusion: Final Thoughts!

As a part of the Citrix ADC appliance, the Web App Firewall is wholly integrated and works flawlessly with other functionalities. Web App Firewall and CNS 320 training can be used with other Citrix ADC security capabilities to set the bar for security at its highest.

Your most important assets are your applications and APIs. To keep them safe, Citrix Web App Firewall protects them from both known and unknown application attacks and provides information for speedier remediation of these assaults. Hence, using multiple clouds ensures your app’s security and efficiency.

41 thoughts on “How To Monitor & Troubleshoot Citrix Web Application Firewall?

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