# network security

> policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of computer networks and network-accessible resources

**Wikidata**: [Q989632](https://www.wikidata.org/wiki/Q989632)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Network_security)  
**Source**: https://4ort.xyz/entity/network-security

## Summary
Network security refers to the policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of computer networks and network-accessible resources. It is a critical component of computer security, focusing specifically on safeguarding network infrastructure and data.

## Key Facts
*   Network security is a class of computer security.
*   It involves policies and practices to prevent and monitor unauthorized access, misuse, modification, or denial of computer networks and network-accessible resources.
*   Aliases include netsec, computer network security, Netzsicherheit, сетевая безопасность, امن الشبكات, أمن الشبكة, and حماية الشبكات.
*   It is part of cybersecurity.
*   A related concept is DHCP snooping, which involves techniques to secure DHCP service.
*   It has a GitHub topic: `network-security`.
*   Its Wikipedia title is "Network security".
*   It has a sitelink count of 36.

## FAQs
### Q: What is network security?
A: Network security encompasses the policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of computer networks and network-accessible resources. It is a specialized field within computer security.

### Q: What broader field does network security belong to?
A: Network security is a subclass of computer security and is also considered part of cybersecurity. It specifically deals with the protection of network infrastructure and the resources accessible through it.

### Q: What are some common terms used for network security?
A: Common aliases for network security include netsec, computer network security, and various translations such as Netzsicherheit (German) and امن الشبكات (Arabic).

## Why It Matters
Network security is paramount in today's interconnected world because it directly addresses the vulnerabilities inherent in computer networks and the resources they provide. By implementing robust policies and practices, it aims to prevent malicious actors from gaining unauthorized access, which could lead to severe consequences such as data theft, system disruption, or the compromise of sensitive information. It is crucial for ensuring the integrity of data, maintaining the availability of services, and safeguarding the confidentiality of communications across all networked environments. Without effective network security, organizations and individuals face significant and diverse risks, including substantial financial losses, severe reputational damage, and critical operational downtime. It forms the foundational layer of defense for all digital interactions, playing a vital role in protecting everything from personal privacy and business operations to critical national infrastructure against a constantly evolving threat landscape. Its importance is therefore underscored by its essential contribution to maintaining trust, reliability, and safety in digital systems globally.

## Notable For
*   Its specific focus on the protection of *computer networks* and *network-accessible resources*, distinguishing it from broader computer security.
*   Encompassing both *policies* and *practices* as a comprehensive approach to defense.
*   Its dual objective of *preventing* and *monitoring* various forms of unauthorized activities.
*   Being a fundamental component of the overarching field of cybersecurity.

## Body

### Definition and Scope
Network security refers to the policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of computer networks and network-accessible resources. This definition highlights its dual function of proactive prevention and reactive monitoring to safeguard digital assets.

### Classification and Relationships
Network security is classified as a subclass of computer security. It is also considered a part of cybersecurity.
*   **Parent Classes:**
    *   **computer security:** protection of computer systems and networks from theft, damage, misuse or data leak (sitelink_count: 89)
    *   **cloud security:** broad set of policies, technologies, applications, and controls utilized to protect virtualized IP, data, applications, services, and the associated infrastructure of cloud computing (sitelink_count: 15)
    *   **internet security:** branch of computer security specifically related to Internet, often involving browser security and the World Wide Web (sitelink_count: 28)
    *   **DHCP snooping:** techniques to secure DHCP service (sitelink_count: 10)

### Related Entities
Several entities and individuals are related to the field of network security:
*   **Things:**
    *   **Cisco ASA:** widely used multi-function Adaptive Security Appliance by Cisco Systems (sitelink_count: 5)
    *   **unidirectional network:** network device that permits data flow in only one direction (sitelink_count: 5)
*   **People (Computer Scientists/Researchers/Teachers):**
    *   Radu Sion (Ph.D. Purdue University 2004, born 1975)
    *   Edgar R. Weippl (born 1975)
    *   Xiaolin Li (born 1973)
    *   Feng Ye (born 1989)
    *   Yi Qian (born 1962)
    *   Henrich C. Pöhls (born 1976)
    *   Elias Z. Tragos (born 1981)
    *   Srikanta Patnaik (born 1967)
    *   Ata Elahi (born 1950)
    *   Eric A. Fisch (born 1969, citizenship: United States)
    *   Davide Balzarotti
    *   Velliangiri Sarveshwaran
    *   Mayank Swarnkar
    *   Thomas Dahlmann
    *   Bhisham Sharma
    *   James C. Hyatt
    *   Charles Edge (American writer)
    *   Herbert Hugh Thompson (Bahamian computer security expert, citizenship: United States)
    *   Francesco Regazzoni (Italian computer scientist, born 1977, citizenship: Italy)
    *   Nick Feamster (born 1979)
    *   Yang Xiang
    *   Tran Hai Anh
    *   Radia Perlman (American software designer and network engineer, born 1951-12-18, citizenship: United States)
    *   Radek Fujdiak (born 1987-11-24)
    *   Naveen Hemrajani

### Key Aspects and Identifiers
*   **Aliases:** netsec, computer network security, Netzsicherheit, сетевая безопасность, امن الشبكات, أمن الشبكة, حماية الشبكات
*   **Part of:** cybersecurity
*   **Has Part(s):** Detecting and patching network vulnerabilities
*   **Sitelink Count:** 36
*   **IAB Code:** 618
*   **Golden ID:** Network_security-YB6BV
*   **Freebase ID:** /m/02t9t3
*   **Quora Topic:** Network-Security
*   **GitHub Topic:** network-security
*   **NL CR Aut ID:** ph127513 (zabezpečení počítačových sítí)
*   **Zhihu Topic ID:** 19554927 (网络安全)
*   **GitLab Topic ID:** network-security
*   **Wikipedia Title:** Network security
*   **Commons Category:** Network security
*   **Topic's Main Category:** Category:Computer network security
*   **JSTOR Topic ID (archived):** network-security
*   **ACM Classification Code (2012):** 10003014
*   **National Library of Israel J9U ID:** 987007563690205171 (Computer networks -- Security measures, רשתות מחשבים -- אמצעי ביטחון)
*   **Microsoft Academic ID (discontinued):** 182590292
*   **Encyclopedia of China (Third Edition) ID:** 31523
*   **Encyclopedia of China (Second Edition) ID:** 235690

```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "network security",
  "description": "Policies and practices adopted to prevent and monitor unauthorized access, misuse, modification, or denial of computer networks and network-accessible resources.",
  "sameAs": [
    "https://en.wikipedia.org/wiki/Network_security"
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  "additionalType": "https://schema.org/ComputerSecurity"
}

## References

1. Freebase Data Dumps. 2013
2. Quora
3. [Source](https://golden.com/wiki/Network_security-YB6BV)
4. [network-security · GitHub Topics · GitHub](https://github.com/topics/network-security)
5. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)