Compare Filtering Technologies |
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This table compares software and hardware methods of filtering Internet content currently applied end users, ISPs and at Carrier level. Technology | Effect on Network Performance | Typical Application | Support Requirements | Security | Ease of Implementation | Number of URLs blocked | Per User Cost | Effectiveness | Per user profiles | DNS Poisoning | None | ISPs, Carriers | Low | Med | Easy | Thousands | Low | Med (overblocking risk) | no | IP address blocking | Low | ISPs | Med | High | Med | Thousands | Low | Med (overblocking risk) | no | PC-Based software | Medium | Homes, Schools | High | Low | Hard | Millions | High | Med | yes | PC-Based client-server | Low | Homes, Schools | Med | Med | Med | Millions | Med | Med | yes | Proxy-based Filtering software | Low-High | Corporate Networks | Med | Very High | Med | Millions | Low | Very High | yes | Analysis-based (dynamic) Filtering Systems | Low-High | Corporate Networks | Med | Very High | Med | Millions | Low-Med | Very High | yes | Pass-by Filtering Appliance | None | Corporates, ISPs | Low | Very High | Easy | Millions | Low | Very High | yes | Hybrid BGP and URL Filter | None | ISPs, Carriers | Very low | High | Very Easy | Thousands | Very low | Very High | no | |
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