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Glossary of terms and definitions for IT (Information Technology), the Internet and cyber security.
This glossary provides more than 480 clear and concise definitions of commonly used terms in the fields of information technology, the internet, and cyber security. It is designed to support users of all levels in understanding key concepts, technical jargon, and acronyms frequently encountered across digital platforms and security-related discussions. Whether you are a business owner, student, professional, or simply interested in the digital landscape, this resource aims to enhance your knowledge and confidence in navigating the ever-evolving world of technology.
DNS filtering is a technique used to restrict access to certain websites based on domain names. It prevents users from reaching malicious or inappropriate sites by blocking DNS queries that resolve to blacklisted domains.
Example: A business implements DNS filtering to block employees from accessing known malware sites and prevent accidental downloads of ransomware.
See also: Protective DNS (PDNS)
Web filtering is a broader security measure that controls access to websites based on content categories, reputation, or security risks. It can use DNS filtering, URL filtering, and content analysis to block harmful or non-compliant web traffic.
Example: A school uses web filtering to prevent students from accessing adult content, social media, and gaming sites during school hours while allowing educational resources.
See also: Protective DNS (PDNS), DNS Filtering