Tag: zero trust

IP whitelisting restricts access by source IP address, but cannot verify user or device identity.
Network Security February 26, 2026
IP Whitelisting Explained: Use Cases, Limits, and Security Risks

IP whitelisting limits access to approved source IP addresses. While useful as a perimeter filter, it cannot validate identity and struggles in cloud and remote-first environments.

By Vivek Raj 5 min read
Ethical hackers simulate real-world attacks to uncover vulnerabilities before criminals exploit them.
Cybersecurity February 26, 2026
What Is an Ethical Hacker? Why Companies Authorize Security Testing

Ethical hackers perform authorized penetration testing to identify vulnerabilities, strengthen defenses, and reduce an organization’s overall attack surface.

By Vivek Raj 4 min read
DHCP fingerprinting reveals device types at first connection, but visibility alone is not identity or security.
Network Security February 25, 2026
What Is DHCP Fingerprinting? Device Identification & NAC Limits Explained

DHCP fingerprinting passively identifies device types using DHCP option patterns, but it provides visibility, not cryptographic identity or access enforcement.

By Vivek Raj 4 min read
NAC enforces identity-based access at the network edge using authentication, authorization, and compliance checks to prevent unauthorized devices from connecting.
Network Security July 31, 2024
What is Network Access Control (NAC)?

Network Access Control (NAC) regulates device and user access at the network edge using authentication, authorization, and compliance enforcement to strengthen enterprise security.

By Vivek Raj 8 min read