Filtering technologies can be deployed as "pass-through" or "pass-by." Pass-through solutions, such as proxies, often slow down network traffic and become a bottleneck or point of failure since filtered traffic must pass through the proxy before reaching the end-user. In contrast, with 8e6 Technologies' pass-by approach, the R3000 Internet filter is installed outside the flow of network traffic to 'watch' rather than 'stop and check' Web site requests. If the R3000 detects a request for a blocked site or IM network, data is then prevented from returning to the end-user.