Computer Network Security
Computer Network Security
Computer Network Security is a critical area of Information Technology focused on protecting the integrity, confidentiality, and availability of data as it travels across or is stored within a computer network. In simple terms, it involves defending computer networks against unauthorized access, misuse, malfunction, or theft. Whether it’s a personal home network or a large-scale enterprise system, ensuring proper network security is essential to protect digital assets and maintain trust.
What is Computer Network Security?
Computer Network Security refers to the practices and technologies used to monitor, prevent, and respond to cyber threats that target network infrastructure. It involves a combination of software, hardware, policies, and procedures designed to protect sensitive data from being intercepted or altered by unauthorized users. It ensures that only legitimate users can access and use the network, and that the data remains secure during transmission and storage.
Network security includes multiple layers of defense at the edge and within the network. Each layer implements policies and controls to prevent breaches. Common threats include malware, phishing attacks, ransomware, denial-of-service attacks (DoS), and man-in-the-middle attacks.
Computer Network Security Tools
Some common computer network security tools are as follows:
- Firewall: Acts as a barrier between a trusted internal network and untrusted external networks, blocking unauthorized access.
- Antivirus Software: Detects and removes malicious software from computers and networks.
- Intrusion Detection System (IDS): Monitors network traffic for suspicious activities and alerts administrators of potential threats.
- Intrusion Prevention System (IPS): Similar to IDS but also actively blocks detected threats.
- Virtual Private Network (VPN): Encrypts internet connections to secure data transmission over public networks.
- Encryption Tools: Protect data by converting it into unreadable code that can only be decoded by authorized parties.
- Security Information and Event Management (SIEM): Collects and analyzes security data in real-time to detect and respond to threats.
- Access Control Systems: Restrict network access based on user identity and role.
