Computers and Technology

Do You Know 3 Types of Web Application Firewalls?

Do You Know 3 Types of Web Application Firewalls?

Let’s look at how a web application is hosted and where the Web application firewalls is placed on the network to refresh our memories.

There are many Web application firewalls (WAF) on the market. But they are not all the same. There are pros and cons to each WAF, so it’s important to know the differences between them before choosing one.

Web application firewalls come in three different kinds (WAF)

1. Hardware-based Web Application Firewall

A hardware-based WAF is set up by putting a hardware appliance on the LAN close to the web and application servers. There is an operating system inside the appliance that lets software be changed and updated.

The best thing about a hardware-based WAF is that it works quickly and well. Because it is close to the server, it can track and filter data packets going to and from the site with very low latency. The biggest problem is that hardware devices are expensive to buy and keep up. Hardware-based WAFs are more expensive than other types of WAFs to buy, install, store, and maintain.

Who does it make sense for?

A hardware-based WAF is often used by large businesses that get tens of thousands or even hundreds of thousands of visitors every day. This is because speed and performance must come first in order to serve such a large number of clients well. Also, most large businesses can afford the costs of managing and running hardware.

2. Software-based Web Application Firewall

A software-based WAF is put on a virtual machine instead of a real piece of hardware (VM). All of the WAF parts are almost exactly the same as those in a hardware WAF. The main difference is that the customer would have to use their own hypervisor to run the virtual machine.

A hardware-based WAF is like getting coffee from a cafe, while a software-based WAF is like getting coffee from a drive-thru, where the customer provides their own place to drink it (their car).

The main benefit of a software-based WAF is that it is flexible. The virtual machine can be used both on-premises and in the cloud. It can connect to web and application servers in the cloud. A hardware WAF costs more money than a software WAF. Because it is run on a virtual machine, it has more latency during the monitoring and filtering process. This makes it slower than a hardware WAF.

Who does it make sense for?

Software WAFs are very common in places like data centers and hosting providers that use cloud-based web and application servers. Small and medium-sized businesses that want to protect their online applications but don’t want to spend a lot of money on it also like them.

3. Cloud Web Application Firewall

A cloud-based WAF is a newer type of WAF that is managed and delivered by a service provider directly through SaaS. (software-as-a-service). Unlike a software-based WAF, the WAF components are all hosted in the cloud, so the user doesn’t have to install anything locally or on any virtual machines.

The main advantage is that it’s easy. The user doesn’t have to install any software; all they have to do is sign up for a subscription plan. The service provider handles all optimization and upgrades, so the user doesn’t have to worry about them. On the other hand, there isn’t much room for customization because the WAF is completely managed by the service provider.

Who does it make sense for?

Cloud-based WAFs are great for most small and medium-sized businesses because they don’t need physical storage or manual maintenance. This makes them perfect for businesses that don’t have a lot of extra resources to run a WAF.

Web Application Firewall Benefits

WAFs are not a complete security solution, but they help build a solid security architecture. It keeps track of and stops web application traffic that a firewall can’t stop. It’s easy to set up, use, and manage, especially if you choose software-as-a-service, and it may help fill in holes in your firewall.

Without a WAF, your company could be attacked by hackers, which could lead to the loss of important customer or business data, a loss of reputation and consumer trust, and even the blacklisting of your website on search engines. Overall, the results would be very bad for any business. WAFs can help protect your business from attacks on online applications such as:

Cookie Poisoning avoiding.

Cookie poisoning, which is also called “session hijacking,” happens when a cybercriminal changes or fakes a cookie to get around security or get into a server to steal information. When a user needs to connect to an account, a cybercriminal steals the cookie and gets information from it, like personal information that was automatically filled in. WAFs can stop this from happening by encrypting and storing personal information and by finding changed or “poisoned” cookies before they reach the server.

SQL Injection avoided

Structured Query Language (SQL) is a computer language that is used a lot. By changing application queries, cybercriminals can get to sensitive personal or financial data through SQL injection. WAF may protect against this by enforcing rules that say SQL injections must meet certain criteria. If they don’t, web application access will be blocked.

Now that you know what the different kinds of web application firewalls are, you can decide which one to use. Please pass this along to your friends who might be interested.

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