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Ultra-low latency in URL detection

More than 99% of controlled content is detected by locally cached database and it quickly learns the browsing habits of users. This is the heart of Zyxel Content Filtering 2.0, providing high-performance web content scanning and detection.

Up-to-minute coverage from rich cloud database

Combining a filtering structure with a cloud service to ensure zero-delay category detection, Zyxel URL detection provides instant coverage for sites. If a URL is not found in the locally cached database, the querying process will redirect to the security cloud database for URL mapping. The global security cloud database remains up-to-date by processing over 17 billion transactions a day from over 600 million users from 200 countries.

Zyxel technology utilizes automated learning to keep data up-to-date by relying on extensive resources like user queries, URL dynamics, security alliances, and more than 200 industry leading web data centers. Zyxel Content Filtering targets more than 60 content categories and covering six primary groupings:

Group Description Category
Security threat:

Security threat

Websites that might spread malware,
spyware, or phishing attacks.
  • Anonymizers
  • Botnets
  • Compromised
  • Network Errors
  • Parked Domains
  • Phishing& Fraud
  • Spam Sites


Any material not suitable for children,
including sexual content and gambling sites.
  • Child Abuse Images
  • Gambling
  • Nudity
  • Pornography/Sexually Explicit
  • Sex Education
  • Tasteless
  • Violence


Websites pertaining to illegal drugs,
or promoting potentially illegal or immoral activity.
  • Alcohol/Tobacco
  • Criminal Activity
  • Cults
  • Hacking
  • Hate & Intolerance
  • Illegal Drugs
  • Illegal Software
  • School Cheating
  • Weapons
Life information:

Life information

General information websites relating people’s
livelihood containing content related to business, education, news, travel, lifestyle etc.
  • Arts
  • Business
  • Computers & Technology
  • Education
  • Fashion & Beauty
  • Finance
  • Government
  • Health & Medicine
  • Job Search
  • Leisure & Recreation
  • News
  • Non-profits & NGOs
  • Politics
  • Real Estate
  • Religion
  • Restaurants & Dining
  • Sports
  • Transportation
  • Travel
Web entertainment and services:

Web entertainment and services


Web services providing real-time entertainment over
the Internet, such as forums, games, streaming services, chat, etc.
  • Chat
  • Dating & Personals
  • Download Sites
  • Entertainment
  • Forums & Newsgroups
  • Games
  • Greeting Cards
  • Image Sharing
  • Information Security
  • Instant Messaging
  • Peer to Peer
  • Search Engines/Portals
  • Shopping
  • Social Networking
  • Stream Media & Downloads
  • Translators
  • Web-based Email


Unclassified or personal websites.
  • Advertisements & Pop-Ups
  • General
  • Personal Sites
  • Private IP Address
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