How does the WAF firewall protect Web applications?

Latest Update: 24/05/2024

How does the WAF firewall protect Web applications?

How does the WAF firewall protect the Website?

WAF FireWall protect Web applications by monitoring and filtering HTTP traffic from the internet to your Website. WAF can protect the Website from network attacks such as cross-site requests, Local File Inclusion (LFI), SQL injection, cross-site scripting (XSS), and more.

Hackers often take advantage of vulnerabilities on the Website to carry out network attacks because they are easier to exploit and cost less to invest. But WAF will fully protect the Website against dangerous network attacks on the Web application layer (belonging to layer 7).

Current cybersecurity statistics show that between 70% and 80% of Web applications have serious vulnerabilities waiting to be exploited by hackers. Therefore, it is urgent and urgent to find good Website Security Solutions to help fill these gaps.

In the OSI network model, there are three key points that need absolute security: the network layer belongs to layer 3, layer 4 and the Web application layer belongs to layer 7. WAF will support comprehensive protection for 3 points hot, against all purposeful Web attacks with various new attack techniques.

All ways to set a password to log into a Web application cannot guarantee absolute security for Web users. Therefore, to ensure customer data is stored safely on the Website, you must have a plan to protect that data source with advanced security technology with artificial intelligence AI and automatic learning machines. AI technology helps you automatically identify unusual requests sent to your website.

Requests to detect login passwords on the Web often cause Web Crashes if the CDN infrastructure is not large enough. Hackers will use a number of tools to help create a series of login codes and send them continuously to the Website, thereby creating common DDoS Web attacks.

How does the WAF firewall work?

The WAF firewall will be placed between the visitors and the internet service they want to connect to so that WAF can check all connections as they are routed to your Website.

One of the most common types of Web application attacks is cross-site scripting, which involves injecting malicious code into a customer’s Web browser to gain access to the Web cookie. steal login information with admin rights and the Website system you are managing and even change website content, displaying false information on your Web site. This is also considered a purposeful website attack.

WAF can be easily and quickly configured into your website. Then it immediately enforces security policies to prevent malicious Web attacks or block unauthorized visits from those attacks or create virtual patches for the Website right now. the vulnerability that Hacker is trying to exploit.

The lack of configuration on the Web server is also one of the great opportunities for hackers to detect and exploit vulnerabilities on the network layer of layer 3 and layer 4. Therefore, WAF is created to stop threats like this.

If you regularly set up the default client account login password and password, then you may be an easy target for network attackers. To ensure the Website is safe from any programming deficiencies, account settings, or vulnerabilities from the Web application platform itself. You only need to integrate the WAF firewall system, everything will be solved quickly.

The WAF firewall will protect less secure Web systems through password detection policies on the Web. WAF will force visitors to enter the CAPTCHA code when logging in and rejecting unusual protocols or requests. After that, it is required to enforce the necessary security directives to verify the real user.

Websites with poor login credentials can easily be hacked through vulnerabilities such as code injection. Hackers try to execute implicit SQL statements to gain access to illegal Web databases. These attacks will be quickly detected and prevented by the WAF security system.

Perennial Web platforms that have not been updated to the new version are also one of the most vulnerable vulnerabilities today. But WAF can prevent attacks exploiting this vulnerability until the Web platform has an official patch.

Conventional Web security systems will not be able to fully monitor and log traffic, leading to omitting early signs of imminent malicious attacks. But WAF will help you track where traffic and suspicious requests are gathering on the Web and notify administrators of the presence of these threats.

Hackers can also attack websites with tools that scan the site’s structure and exploit poorly cached resources. WAF will block access requests unrelated to the normal use of the Website and only trusted access can use Web administration rights.

WAF can combine Web security policies including using CAPTCHA code and restricting requests by geographic area, IP, or based on identity to access the Web from only one area.

According to recent cybersecurity studies, there is a website attack every 39 seconds.

Of course, Website attacks happen, does not mean that all are successful. Because many businesses today use WAF as a secure solution for websites in cyberspace.

The most common types of Web application attacks include SQ Injection (SQI), Distributed Denial of Service (DDoS), Defacement, Malware Malware, and Account Hacking. SQ Injection accounts for two-thirds of the current Web attacks.

How many different types of WAF firewalls are there?

There are three types of Web Application Firewalls. They differ in their deployment model: network-based (also called Network WAF), host-based (Host WAF), and cloud-based (Cloud WAF).

1. Network WAF

Built on a hardware platform, it helps reduce latency due to local installation, but this is also the most expensive implementation method. Because of the physical device must be stored and maintained in order to meet maximum capacity. The WAF network cannot predict and detect impending DDOS attacks.

2. Host WAF

Can be fully integrated into the software of an application on the Web This method is much cheaper than the WAF network and also more customizable. However, host requirements WAF provides access to your Web applications to be able to deploy. The main disadvantage of the WAF host is that the deployment is very complicated, costly maintenance, and local server resources that it consumes and manages the deployment will be done in parallel with the application development cycle. WAF host maintenance costs are particularly expensive and take a lot of time to complete.

3. Cloud WAF

Incredibly simple to implement and affordable. Cloud WAF is fast and hassle-free. You only need to change the DNS to redirect Website traffic through this security layer.

Cloud WAF costs very little upfront, with monthly and yearly payments to the security providers you sign up for.

Cloud WAF allows you to update the website traffic continuously (monitor traffic Web), to ensure the Website is always safe from any threats of attack.

The only drawback of Cloud WAF is if Cloud WAF is built from a third party, and they are responsible for legal traffic and minimal latency when filtering traffic with a limit on Cloud storage distance. WAF and where your Web server is located.

If you use Web server and Cloud WAF the same provider will overcome this drawback.

You can find VNETWORK, a Web Server service provider with Asia’s leading CDN system and the only Cloud WAF system in Vietnam.

Website, Web Server or Web applications are the main targets of network attackers. Therefore, Cloud WAF Firewall is considered by cybersecurity experts to be the best security solution in the present and the future.

If you own an online business, you can sign up for Cloud WAF VNIS today.

>> Learn the operating principles of Cloud WAF VNIS on the basis of AI technology (artificial intelligence) and automatic machine learning.




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