How can a firewall prevent DDos attacts from being launched on a company network?

A firewall can help prevent DDoS attacks by monitoring incoming traffic and filtering out malicious requests that exceed predefined thresholds. By implementing rules that block or limit excessive traffic from specific IP addresses or geographic regions, firewalls can reduce the impact of an attack. Additionally, advanced firewalls can use anomaly detection to identify and mitigate unusual traffic patterns indicative of a DDoS attack. However, while firewalls are a crucial line of defense, they may not completely eliminate the risk, necessitating a layered security approach.