Meaning of WAF. What does stand for ❓

What does WAF stand for?

How the WAF works?

The importance of the WAF

  • WAF activation makes protecting sensitive data an easier job.
  • Malicious traffic to data like customer payment details, card data, personal information, and many more can be prevented with it. Data leaks will be least possible.
  • Such organizations need to store huge sensitive information overcloud or in a backend database. To access these databases, a web app is used. Also, for the seamless operation of mobile and IoT device transactions, the application layer should be fail-proof.
  • Hackers keep an eye on these databases and devices and leave no opportunity to target them. Placing a WAF security barrier in front of the web application is a smart move as hackers won’t be able to access the database.
  • Organizations maintaining databases online or using online services need to fulfill certain compliance requirements. For instance, firms supporting payment via credit or debit card need to meet PCI DSS compliance.

Types of Web Application Firewalls

  1. Host-based WAFs

Advantages of the Web Application Firewall

  • Cross-site scripting or XSS involves introducing spiteful scripts in someone else’s browser.
  • SQL injection wherein cybercriminals can affect the SQL database by altering its configuration. By doing so, attackers will steal the crucial data.
  • Web session hijacking attack refers to hacking an ID session by attackers and portraying it as a reliable resource. Attackers steal the ID details mostly from the URL or cookies.
  • DDoS attacks mean flooding a network with unwanted traffic and so that the desired user is not able to access it.
  • Other than dealing with all these attacks, WAF bears another advantage and it is protecting the web-based application without working with the original application code. It saves a huge deal of time and effort.

Models of WAF operation

  • Whitelisting
  • Blacklisting

Firewall vs. Web Application Firewall

Wallarm WAF




CEO at Wallarm. Application security platform to prevent threats and discover vulnerabilities in a real-time.

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Ivan Novikov

Ivan Novikov

CEO at Wallarm. Application security platform to prevent threats and discover vulnerabilities in a real-time.

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