Glossary: Endpoint, Application and Email Security

HTTP status codes

Also written: 200 OK, 403 Forbidden, HTTP 200, error 403, TCP_MISS/200, TCP_DENIED/403

Three-digit codes a web server or proxy sends back to say how a request went: 200 OK means it succeeded, and 403 Forbidden means it was refused. In the Squid log, TCP_DENIED/403 means the content filter blocked the request.

Where the book teaches it

Chapter 1: Content Filters and Endpoint Security
Chapter 3: Application Security

Related terms

Squid access log content filter