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What is network security?

The definition of Network security

Network security encompasses a complex ecosystem of applications, configurations, tools, and hardware. This is issued to safeguard the integrity of a computer network by prohibiting unauthorized access and cyber threats.

As networks expand and evolve in an ever-changing world, the importance of network security grows. There is no network security “finish line”, it is a continual process of development and adaptation to the evolving threat landscape.

At its core, network security is a form of cybersecurity, with focus on shielding networks and the overlying architecture, such as servers, from a spectrum of cyber threats. This involves establishing resilient infrastructure where devices, applications, users, and data can operate securely.

How does Network security work

The architecture of network security encompasses a set of policies, procedures, and best practices for monitoring, detecting, preventing, and mitigating an array of cyber threats.

Network security operates with three principal objectives: firstly, to stop unauthorized entry to network resources; secondly, to identify and terminate ongoing cyberattacks and security breaches and thirdly, to guarantee that authorized users are granted secure access to network resources. 

Network security operates across physical, technical, and administrative domains to protect computer networks. These measures work in harmony to ensure the confidentiality, integrity, and availability of network resources, as well as the protection of the data they carry. A comprehensive network security strategy is essential for safeguarding sensitive information and maintaining network functionality. 

One important aspect of network security is network segmentation, which entails partitioning the network into distinct zones using firewalls as protective barriers. This practice contributes significantly towards overall network security. 

Benefits of Network security

There are many reasons why network security is vital for enterprises, including:

Business continuity
Effective network security measures help prevent network outages caused by cyberattacks or system failures. This translates into uninterrupted operations, minimizing productivity losses and revenue downtime. In the event of a catastrophic event or data breach, robust security measures facilitate fast recovery, ensuring minimal disruption to business operations.

Customers are more likely to trust businesses that prioritize the security of their data. A good reputation in this regard can attract and retain customers, increasing long-term business success.

Legal and regulatory compliance
Adhering to security standards and regulations is essential for maintaining a profitable business. Non-compliance can lead to legal challenges, financial penalties, and reputational damage. Demonstrating strong network security practices can set an enterprise apart from its competitors, making it the preferred choice for security-conscious customers.

Network security safeguards sensitive information from unauthorized access or theft. This is vital for protecting customer data, financial records, intellectual property, and other critical assets. The management of data in accordance with data privacy regulations, such as GDPR or HIPAA, is easier to achieve with robust network security.

Customer benefits
Network security is not just a technical requirement, or a tick box, but a cornerstone of modern enterprise strategies. 

Sensitive data is protected
Robust network security safeguards the sensitive data entrusted to a business by its customers. This includes personal information, payment details and confidential records. Customers can rest assured that their data is shielded from unauthorized access and security breaches.

High levels of customer loyalty and trust
Network security measures prevent service interruptions and data breaches, ensuring that customers receive a consistent and reliable experience. This fosters trust and encourages long-term loyalty.

Seamless communication and support
A secure network enables uninterrupted communication channels between businesses and their customers. This means reliable access to websites, apps and online services, enhancing the overall customer experience. 

Types of network security - Multi-layer protection

To achieve comprehensive network protection, it is necessary to deploy and maintain a variety of specialized hardware and software components. Through the implementation of a multi-layered network security strategy, a network can be effectively protected against a broad spectrum of vulnerabilities. 

Under the expansive umbrella of network security, diverse security types come into play, including firewalls, VPNs, email security, device security, mobile security, authentication, anti-virus solutions, app security and DDoS protection. Specific security measures are chosen depending upon the layer of infrastructure requiring protection.

However, secure infrastructure needs solid foundations. Security must therefore start with proper groundwork, at the layer upon which everything is built with the Internet backbone. 

Since 2017, Arelion has maintained its status as industry leader for Internet backbone services, with a leadership role in security at the core of the Internet, safeguarding its customers to the extent that they often remain unaware of cyber-attacks such as DDoS.

Our enhanced infrastructure boasts advanced mitigation techniques which include BGP flowspec, granting us finer traffic management control throughout our expansive global backbone network. Today, this directly connects over 70% of the world's Internet routes. 

As a result, we have developed a highly adaptive and effective method for safeguarding our backbone and, by extension, our customers, against some of the largest volumetric DDoS attacks.