Topic summary
Content filtering
Extracted from the Wikipedia article Internet filter.
Bypassing filters
Content filtering in general can "be bypassed entirely by tech-savvy individuals." Blocking content on a device "[will not]…guarantee that users won't eventually be able to find a way around the filter." Content providers may change URLs or IP addresses to circumvent filtering. Individuals with technical expertise may use a different method by employing multiple domains or URLs that direct to a shared IP address where restricted content is present. This strategy doesn't circumvent IP packet filtering, however can evade DNS poisoning and web proxies. Additionally, perpetrators may use mirrored websites that avoid filters.