What is a recommended solution to block unauthorized access to company infrastructure?

To effectively block unauthorized access to company infrastructure, implementing firewalls is a highly recommended solution. Firewalls serve as a critical security component that monitors and filters incoming and outgoing network traffic based on established security rules. They act as a barrier between trusted internal networks and untrusted external networks, effectively controlling the flow of data based on policies defined by network administrators.

Firewalls can be configured to allow or deny traffic based on various criteria, including IP addresses, protocols, and ports. This capability is crucial for preventing unauthorized users and malicious actors from gaining access to sensitive data and network resources. Advanced firewalls can also include stateful inspection, deep packet inspection, and other features that enhance their ability to block unwanted traffic effectively.

In comparison, other options like IPS (Intrusion Prevention Systems) are focused on detecting and responding to potential threats after they have entered the network, while VPNs (Virtual Private Networks) provide secure remote access but do not inherently block unauthorized access. Proxies can facilitate controlled access and filter content but do not serve as the primary defense against unauthorized connections in the same way a firewall does. Therefore, using firewalls is essential in establishing a strong foundational security posture against unauthorized access to company infrastructure.