The Netalyzr analyzes various properties of your Internet connection that you should care about — including blocking of important services, HTTP caching behavior and proxy correctness, your DNS server's resilience to abuse, NAT detection, as well as latency & bandwidth measurements — and reports its findings in a detailed report. You can check out an example report from a real network to get a better idea of our tests. To perform these tests, the Netalyzr runs a Java applet on your computer. You may be asked to confirm network-related activities that your system's applet security policy or firewall considers sensitive. We hope that you will permit any such activity, as it will ensure more comprehensive test results