The Netalyzr analyzes various properties of your Internet connection that you should care about \u2014 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 \u2014 and reports its findings in a detailed report. You can check out an\u00a0example report<\/a>\u00a0from a real network to get a better idea of our tests.<\/p>\n 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. For details on the tests that will be performed please visit the\u00a0FAQ<\/a>\u00a0section.<\/p><\/blockquote>\n to try it today, click the link below and let me know what you think by commenting on this post:<\/p>\n http:\/\/netalyzr.icsi.berkeley.edu\/index.html<\/a><\/p>\n <\/p>\n here are my results:<\/p>\n <\/a><\/p>\n Major Abnormalities\u2013<\/a><\/div>\n <\/a><\/p>\n Minor Aberrations\u2013<\/a><\/div>\n NAT detection (?<\/a>): NAT Detected+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n Local Network Interfaces (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n DNS-based host information (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n NAT support for Universal Plug and Play (UPnP) (?<\/a>): Yes+<\/a><\/div>\n<\/div>\n<\/div>\n <\/a><\/p>\n TCP connectivity (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n UDP connectivity (?<\/a>): Note\u2013<\/a><\/div>\n The applet was able to receive fragmented UDP traffic.<\/p>\n<\/div>\n UDP access to remote DNS servers (port 53) appears to pass through a firewall or proxy. The applet was unable to transmit an arbitrary request on this UDP port, but was able to transmit a legitimate DNS request, suggesting that a proxy, NAT, or firewall intercepted and blocked the deliberately invalid request.<\/p>\n<\/div>\n <\/a><\/p>\n Traceroute (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n Path MTU (?<\/a>): OK+<\/a><\/div>\n<\/div>\n<\/div>\n <\/a><\/p>\n Network latency measurements (?<\/a>): Latency: 68ms Loss: 0.0%+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n TCP connection setup latency (?<\/a>): 66ms+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n Network background health measurement (?<\/a>): 1 transient outages, longest: 0.6 seconds\u2013<\/a><\/div>\n <\/a><\/p>\n Network bandwidth (?<\/a>): Upload 1.8 Mbit\/sec, Download 3.9 Mbit\/sec+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n Network buffer measurements (?<\/a>): Uplink 51 ms, Downlink 2100 ms\u2013<\/a><\/div>\n <\/a><\/p>\n Address-based HTTP proxy detection (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n Content-based HTTP proxy detection (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n HTTP proxy detection via malformed requests (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n Filetype-based filtering (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n HTTP caching behavior (?<\/a>): OK+<\/a><\/div>\n<\/div>\n <\/a><\/p>\n JavaScript-based tests (?<\/a>): OK+<\/a><\/div>\n<\/div>\n<\/div>\n\n
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