What is the difference between a web application firewall and an intrusion detection system?

What is the difference between a web application firewall and an intrusion detection system?

A web application firewall (WAF) protects web applications by filtering and monitoring HTTP traffic, while an intrusion detection system (IDS) monitors network traffic for suspicious activity and alerts administrators.

Can you give me examples of when to use each?

Sure! Use a WAF to protect against attacks like SQL injection on your web applications. An IDS is useful for detecting unauthorized access attempts on your network.

Are there any overlaps in their functionalities?

Yes, both can enhance security, but they serve different purposes. A WAF focuses on web traffic, while an IDS looks at overall network traffic.

Which one is more important for a small business?

For a small business with a web presence, a WAF is often more critical to protect web applications, but an IDS can also be beneficial for overall network security.