Firewalls act as a barrier between a trusted internal network and untrusted external networks (like the internet). They filter incoming and outgoing traffic based on predefined security rules, helping prevent unauthorized access and cyberattacks.

NAC solutions enforce policies that control access to the network based on factors like device type, user credentials, and security posture. This helps prevent unauthorized devices from gaining access.

VPNs create encrypted tunnels for secure communication over public networks. They are commonly used for remote access, allowing employees to connect to the corporate network securely from remote locations.

WAFs protect web applications from common attacks like SQL injection, cross-site scripting, and more. They analyze incoming traffic to identify and block malicious requests.

These solutions detect, prevent, and remove malicious software (malware) from networks and devices. They help safeguard against viruses, worms, trojans, and other malware.

Segmenting networks involves dividing a larger network into smaller subnetworks. This limits the spread of threats and contains potential breaches, enhancing overall network security.