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Thursday, July 7, 2022

Firewalls for Web Applications. Every One Should Know

A web application firewall Network (WAF) is a security solution that examines HTTP requests and applies rules to block potentially harmful requests. A WAF distinguishes between healthy and harmful HTTP traffic, based on the properties of each request. It can be configured to block both GET and POST requests, which are the most common ways to access the server. A WAF is a powerful way to protect your website from cyber-attacks and other threats.

A web application firewall can be either software or hardware. It can be an appliance or a standard server that runs a common operating system. A WAF can also be standalone or integrated into other network components. A WAF can address shortcomings in code, including DDoS attacks. It can be configured to block only certain types of traffic. A WAF should also record attacks in its logs. This will help you prevent attacks from taking over your website.

What is Ideal Web Application Firewall Network

An ideal web application firewall will be able to identify and block attacks with pinpoint accuracy. This means that continuous security for applications, APIs, and infrastructure is provided. It also supports compliance with security standards. For further details, contact your vendor. This article explores the various features of web application firewalls. You can use one of these tools to protect your website. 

Amazon CloudFront StackPath

Amazon Cloud Front. Stack Path is a cloud-base web application firewall that is designed to prevent malicious activity. Stack Path works with CDNs and blocks common attack patterns. Consequently, this service costs about $45 per month per server, but offers several other benefits. Its most notable feature is the geomantic operator. Custom rules are evaluated on every request that passes through a WAF. You can read more about geomantic custom rules on their website.

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Network Firewall

A network firewall is similar to a WAF. It controls access to the network by acting as a gatekeeper between the local network and the Internet. In a network firewall, rules are established for which types of web traffic are allowed and which are not. In addition, it can be in software or hardware form. It’s important to choose the right one based on your needs and requirements. The right firewall will protect your business and keep it up and running.

Advantages of a Web Application Firewall Network

The advantages of using a web application firewall are numerous. Here are just a few of the features of the best web application protection solutions.

Save Your Money and Resource

Cloud WAFs provide the same benefits as software-base WAFs, but are cloud-based. They can save you money and resources. The cost of a cloud WAF is lower than an on-premises installation. A cloud service provider can offer unlimited hardware and support. Further, there are also cloud-base and software WAFs. For most organizations, the right WAF is crucial to protect against unauthorized activity. And a good WAF can help secure web applications and prevent malicious activity.

Protects Website Against a Variety of Threats

A software firewall can be a stand-alone device or can be integrate into other network components. A web application firewall protects your website against a variety of threats. Its primary function is to protect your server from attacks. Moreover, a firewall can protect your servers and your data from threats that are present in your website. A firewall can block malicious URLs by detecting any suspicious traffic.

Benifits OF using Firewall
Benefits OF using Firewall

Protects From Malicious Websites

Custom software development company can protect against common vulnerabilities and exploits. A WAF protects against malicious websites. In addition, it can also block malware, bots, and phishing attacks. A WAF can protect your website from bots and malware. A web application firewall can prevent phishing attacks and other attacks that exploit the security of your website. A web application firewall can prevent any kind of attack from reaching your site. When you install a WAF, it should be install as a stand-alone component. It can be hosted in an AWS data center.

Offer a Variety of Security Options

An ideal solution should offer a variety of security options to protect your website. The most popular WAFs today are those that are easy to deploy and configure. Though, the web application firewall should be able to handle all of these risks. A well-designed WAF will protect your website from both malicious and benign attacks. Moreover, it should also be able to detect any malicious sites on your site that can impact your business. So how do you choose the best WAF?

Layers, Sub layers and Filters

The firewall rules are configure using three types of object: layers, sub layers and filters as shown in the following diagram. The firewall layer is used to categorize the network operation to be evaluated. For example there are separate layers for inbound and outbound packets. This is typically further differentiate by IP version, so there are separate IPv4 and IPv6 layers for inbound and outbound packets. While the firewall is primarily focuses on IP traffic there does exist limited MAC and Virtual Switch layers to perform specialist firewalling operations. You can find the list of predefine layers on MSDN here. As the WFP needs to know what layer handles which operation there’s no way for additional layers to be added to the system by a third-party application.

When a packet is evaluated by a layer the WFP performs Filter Arbitration. This is a set of rules which determine the order of evaluation of the filters. First WFP enumerates all registered filters which are associate with the layer’s unique GUID. Next, WFP groups the filters by their sub layer’s GUIDE and orders the filter groupings by a weight value which was specific when the sublayer was registered. Finally, WFP evaluates each filter according to the order based on a weight value specific to when the filter was registered.

WAF Operating Modes

Aside from the security models, we have the operating modes of a WAF. A WAF can operate differently, according to the use we want it for. By the way each of them has its positive and negative aspects and it is a seri- ous part to consider when selecting a WAF for your company. The most famous operating modes are:

Benefits OF using Firewall
Benefits OF using Firewall

Reverse proxy

As we say in the beginning of the module a WAF can be use as a reverse proxy because it sits in front of the server and filters all the incoming traffic which is the opposite from a proxy. Many times, the negative in a reverse proxy is the latency that may occur but this problem tends to be fixed in newer solu- tions. In this mode, WAF has its own IP address, and all traffic goes through this address.

Transparent proxy

This proxy has the same conditions as the reverse proxy, with the change that it does not have an IP address. This is because it sits behind another firewall and. it does not need any networking changes on the server side.

 

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