TCP - IP White Papers
Failures in a Hybrid Content Blocking System
Overview Three main methods of content blocking are used on the Internet: blocking routes to particular IP addresses, blocking specific URLs in a proxy cache or firewall, and providing invalid data for DNS lookups. The mechanisms have different accuracy/cost trade-offs. This paper examines a hybrid, two-stage system that redirects traffic that might need to be blocked to a proxy cache, which then takes the final decision. This promises an accurate system at a relatively low cost. A British ISP has deployed such a system to prevent access to child pornography.
| Publisher | University of Cambridge | File Format | |
|---|---|---|---|
| Date Published | January 2007 | ||
| Format | White Papers | ||
| Topics | |||
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