Meet Wallarm team at Gartner 2024!
Meet Wallarm team at Gartner 2024!
Meet Wallarm team at Gartner 2024!
Meet Wallarm team at Gartner 2024!
Meet Wallarm team at Gartner 2024!
Meet Wallarm team at Gartner 2024!
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API Security

Web Filtering

People are spending more time online, reading their favorite sites, clicking on email links, and using a diversity of web-based SaaS products for private and commercial use. Unrestricted web activity boosts company productivity, but it also puts companies at risk of malware, data loss, and other issues.

URL/web blocking has prevented teams from browsing fruitless websites. Today's web filtering protects entities from malware and phishing sites.

Web Filtering

Web Filtering definition 

A web filtering software is used to control which websites an end user is able to access. It compares the content and its source to a set of rules in order to decide whether or not to display it.

Internet content such as spyware, viruses, and material deemed improper for the workplace can be blocked by implementing a web filtering policy for an organization. Filtering unsuitable content from the internet can help employees operate more efficiently, limit legal exposure, and safeguard a company's network from outside attacks.

In addition to its primary filtering function, a web filtering system may also include a plethora of additional features. Notable characteristics include the ability to report on traffic, soft blocking that can show warnings before denying access, and an override feature that lets administrators unclog webpage.

How does it work?

Hardware or software content filters are commonly part of a firewall. Content filtering can also refer to a company's network-wide information system usage regulations. Office internet content filters block distractions like social channels. Web content clarifying sets rules and patterns for hazardous sites. 

The content filter uses established rules to organize commonalities like objects in photos or text strings like keywords into categories like adult, gambling, gaming, sports, etc. Sites that match are jammed and designated as undesirable.

Web content screening can protect children from unsuitable content. Yet, workplace material filtering is becoming vital. DNS filtering blocks sites by pre-identifying their IP addresses to restrict access. These sites include productivity drains like social media, gambling, pornographic content, and malware-risky sites.

The Importance of Web Filtering 

It is a great tool for anyone worried about using the internet securely, as it may block access to malicious sites and other threats. Employees' online activity can be supervised and filtered to enforce IT policies and avoid data leaks. 

Any breach of a company's privacy, no matter how minor, will have negative consequences. CIPA (Child Internet Protection Act) is a legislation that mandates filtering solutions for publicly accessible net access suppliers like universities and libraries or risks losing funds. 

Web filters can block entree to harmful websites that could infect a user's machine with malware. Even at a micro level, web categorizing enables organizations to avert workforces from retrieving, distracting or otherwise using unbefitting sites.

Web Filtering Types 

This service has several usages but its solutions differ in how they determine allowable material. Web filters can be described as:

  • Allow Listing

Allow listings list sites a person, machine, or application can visit. Any web traffic with an unlisted destination is discarded and this restricts site access.

  • Block Listing

Block lists are diametrically opposed to allow lists. They mention forbidden sites instead of allowed ones. Blocklists check all traffic and drop traffic to destinations on the list. This method is utilized to stop phishing sites, drive-by malware downloads, and obnoxious material.

  • Content Filtering

Based on a webpage's material, this approach allows or blocks circulation. An entity can filter explicit data online. If the policy is breached, the site is blocked. This decontamination method lets a corporate avert unknown malevolent or unacceptable sites.

URL filtering systems implement rules differently based on filter type and location. These processing techniques are applied in several ways:

  • DNS Filtering

It is the Internet's phone book, translating realms like to IP addresses used by computers to route data. This filtering permits or restricts DNS requests based on policy.

  • URL Filtering

They are webpage addresses. URL filtering checks web requests' URLs and decides if they're allowed based on policy.

  • Content Filtering

This analyses a webpage's content and congest policy-violating responses performing a cloud based web filtering.

Benefits of Web Filtering

It can help your institution in several ways. 

  1. Reducing Malware Infection

Before harmful payloads are introduced, you can defend your info and users by confining access to known catastrophic sites. Web filtering reduces malware warnings and endpoint maintenance.

Current URL filtering technologies effectively block harmful applications. Firewalls with online URL filtering systems can examine web pages for hazards, in addition to blocking domains.

  1. Protecting Minors from Unwanted Content

URL content cleaning protects youths from pornographic and ferocious information, which is its main value. In today's fast-paced world, parents may not always be present to monitor their children's material or know all the sites to block. URL filtering in a firewall gives comprehensive control over what is accessible without referring user or administrative rules.

  1. Protection From Exploit-Kits

As network security improves, hackers are finding new ways to break in. Exploit kits exploit web browser susceptibilities via browser extensions and plugins.

Mistakenly visiting malicious sites might release an attack kit that exploits browser or operating system vulnerabilities. Vulnerabilities allow attackers to download malware, hijack sessions and credentials, and more. Content filters can detect exploit kits and prevent payload downloads.

  1. Improving Staff Productivity

Social media is a tremendous time-waster and productivity killer. Restriction boosts productivity and several sectors need social media expertise. Online purchasing and streaming sites drain productivity in these industries. There is no reason for employees to watch movies while working. In addition to blocking distracting websites, it's important to avoid downloading malicious files, opening strange emails, and responding to unknown contacts.

  1. Network Bandwidth Efficiency

Non-work internet use drains network bandwidth. Limiting these sites improves network bandwidth efficiency and speeds. To achieve network bandwidth efficiency, you might educate your employees on the benefits of a continuously fast network or place restrictions on bandwidth-hogging video streaming websites like YouTube.

  1. Regulatory Compliance

Monitoring worker web usage helps prevent internet-related mishaps. Posting hateful, bigoted, or obscene content on blogs or social media, cyberbullying, or downloading copyright-protected material could result in liability. With the world becoming so polarized, you must always defend your firm and brand by carefully controlling the information you and your workers let in or send out.

Filtering Traffic with Wallarm  

API Security, WAAPs, microservices, and serverless workloads deployed in cloud native settings is a strength of Wallarm's end-to-end API security platform. Wallarm is used by the security and devops teams of Fortune 2000 companies and the world's most innovative technology companies because it provides them with unprecedented insight into malicious traffic, comprehensive protection for their entire API portfolio, and automated incident response for product security initiatives.


What web filtering solutions are available?
Who needs web filtering?
What are the benefits of web filtering?
How does web filtering work?
What is web filtering?


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February 26, 2024
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