Waf stands for

Some information security specialists confuse the concepts of WAF and NGFW. Moreover, even some representatives of companies manufacturing products positioned as NGFW commit this fault. “We have an NGFW, do we need a WAF?” or “Why do we need WAF?” are very common questions. This calls for figuring out the background of such confusion, agreeing once and for all on the terms and definitions, and determining the areas of application of each concept. Intro Let us start with the abbreviations that define the categories of information security products: WAF stands for Web Application Firewall, NGFW stands for Next-Generation Firewall. The confusion stems from the word Firewall that is present in both terms and initially encourages the comparison and opposition of the two product categories. However, NGFW and WAF are not interchangeable entities. They are designed to address different issues. They are located at different points in the network, and in most cases, are administered by different teams. Reasons for confusion NGFW is an evolution of traditional firewalls and serves to delimit access between network segments. The reality is that the terms NGFW and firewall are interchangeable today as referring to firewall implies NGFW. Traditional firewalls filter network traffic using parameters such as IP addresses, network protocol identifiers, their attributes such as TCP and UDP port numbers, ICMP types, and other traffic parameters related to layers 3 – 4 of the ISO/OSI. There i...

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A WAF protects your web apps by filtering, monitoring, and blocking any malicious HTTP/S traffic traveling to the web application, and prevents any unauthorized data from leaving the app. It does this by adhering to a set of policies that help determine what traffic is malicious and what traffic is safe. Just as a proxy server acts as an intermediary to protect the identity of a client, a WAF operates in similar fashion but in the reverse—called a WAFs can come in the form of software, an appliance, or delivered as-a-service. Policies can be customized to meet the unique needs of your web application or set of web applications. Although many WAFs require you update the policies regularly to address new vulnerabilities, advances in machine learning enable some WAFs to update automatically. This automation is becoming more critical as the threat landscape continues to grow in complexity and ambiguity. An IPS is an intrusion prevention system, a WAF is a web application firewall, and an NGFW is a next-generation firewall. What’s the difference between them all? An IPS is a more broadly focused security product. It is typically signature and policy based—meaning it can check for well-known vulnerabilities and attack vectors based on a signature database and established policies. The IPS establishes a standard based off the database and policies, then sends alerts when any traffic deviates from the standard. The signatures and policies grow over time as new vulnerabilities are ...