10.5.3 - Content Filtering

Vocabulary flashcards for key concepts in content filtering and URL filtering as discussed in the lecture.

Uniform Resource Locator (URL)

A URL consists of a protocol, domain name, server path, and optionally, query parameter components.

URL filtering

A technique used to allow or block HTTP requests based on URL patterns or keywords.

Content and reputation-based filtering

Filtering that uses databases to score websites based on behavior and history, automatically blocking those with poor scores.

Categories in URL filtering

Classifications used to simplify web usage policies, such as social networking, gambling, and adult content.

Application layer filtering

Filtering that applies rules based on higher-level data, such as HTTP content, as opposed to lower-level network rules.

Transport Layer Security (TLS) issues

Challenges in inspecting encrypted traffic without breaking the TLS handshake, requiring enterprise certificates for decryption.

TLS inspection

The process of the proxy decrypting TLS traffic to apply security policies, requiring a trusted enterprise certificate.

Content filtering firewall

A security measure that restricts access to networks by blocking access to malicious or inappropriate websites.

Network layer filtering

Basic filtering applied at the network or transport layer, distinct from more complex application layer filtering.

Proxies and content filters

Tools that can manage and filter traffic, but face challenges with encrypted traffic due to TLS.