Firewalls act as a barrier between a trusted internal network and untrusted external networks (like the ). They filter incoming and outgoing network traffic based on a set of predefined rules, allowing or blocking data packets based on their source, destination, and content. Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS) are tools that monitor network traffic for suspicious or malicious activities. IDS detects and alerts administrators about potential , while IPS can actively block or prevent these threats from reaching the network.
In order to protect network resources, it is essential to implement strong access control mechanisms to ensure that only authorized users and devices can access the network. This includes user , authorization, and auditing. Encrypting sensitive data as it travels across the network is crucial for maintaining data confidentiality, utilizing technologies like SSL/TLS for web traffic and for remote access. Regularly updating and patching network devices and software is necessary to address known vulnerabilities, as vulnerable systems are often targeted by attackers.
Dividing your network into segments or zones, each with its own security policies and controls, helps contain and mitigate the impact of a security breach. Developing and enforcing network security policies and best practices that define acceptable use, password management, and other security-related behaviors for users and administrators is also important. Employing network monitoring tools to continuously monitor network traffic allows for the detection of anomalies that might indicate a security . Having a well-defined incident response plan in place ensures that there are clear steps to react promptly and effectively to security incidents when they occur, which should include preparation, containment, eradication, recovery, and communication among other steps.
