Difference: NetAlyzr (1 vs. 2)

Revision 22010-01-18 - ChrisWelti

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META TOPICPARENT name="WebHome"

ICSI Netalyzr

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The International Computer Science Institute (ICSI) at Berkeley has released an awesome new java applet which will let you do a whole bunch of connectivity tests (including DNSSEC support). A very nice tool to get information about your Internet connectivity. It also offers test transcripts so you can see tests and results in detail. Check it out!
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Netalyzr is a java applet developed by ICSI which will let you do a whole bunch of Internet connectivity tests. This can be used to determine the Internet connection status of a machine, including NAT, firewall rules, DNS resolver and much more, which can be very helpful in debugging a PERT case. Netalyzr currently supports the following tests:
 
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From its webpage:
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* NAT Detection (internal/external IP address)
* DNS based host information (Tor/Spamhaus/SORBS DHUL)
* outbound TCP reachability (FTP, SSH, SMTP, DNS, HTTP, POP3, RPC, NetBIOS, IMAP, SNMP, HTTPS, SMB, SMTP/SSL, secure IMAP, authenticated SMTP, IMAP/SSL, POP/SSL, remote SIP server, BitTorrent Server)
* outbound UDP reachability (DNS, MSSQL (port 1434)
* Path MTU discovery
* Network latency measurement
* TCP connection setup latency
* Network background health measurement
* Network bandwidth measurements Upload/Download
* Network buffer measurements
* HTTP proxy detection (address-based/header-based/malformed requests)
* Filetype-based filtering (HTTP cache)
* Javascript-based tests
* domain DNS lookup (restricted/unrestricted)
* Direct EDNS support
* DNS resolver address
* DNS resolver properties
* DNS glue policy
* DNS resolver port randomization
* DNS lookups of popular domains
* DNS external proxy
* DNS results wildcarding
* system clock accuracy
* Browser properties
* Uploaded Data
 
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"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."

I've also included screenshots of the applet when run from my workstation.

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Here are some screenshots of the applet, so you get a feeling what it looks like:
 
  • Netalyzr Result Summary:
    Netalyzr-result-summary.png
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  • Netalyzr Server Transcript:
    Netalyzr-transcript-server.png
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-- ChrisWelti - 15 Jan 2010
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-- ChrisWelti - 15 Jan 2010 - 18 Jan 2010
 
META FILEATTACHMENT attr="" autoattached="1" comment="Netalyzr Result Summary" date="1263575093" name="Netalyzr-result-summary.png" path="Netalyzr-result-summary.png" size="128759" user="Main.ChrisWelti" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="Netalyzr Client Transcript" date="1263575665" name="Netalyzr-transcript-client.png" path="Netalyzr-transcript-client.png" size="242537" user="Main.ChrisWelti" version="1"

Revision 12010-01-15 - ChrisWelti

Line: 1 to 1
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META TOPICPARENT name="WebHome"

ICSI Netalyzr

The International Computer Science Institute (ICSI) at Berkeley has released an awesome new java applet which will let you do a whole bunch of connectivity tests (including DNSSEC support). A very nice tool to get information about your Internet connectivity. It also offers test transcripts so you can see tests and results in detail. Check it out!

From its webpage:

"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."

I've also included screenshots of the applet when run from my workstation.

  • Netalyzr Result Summary:
    Netalyzr-result-summary.png

  • Netalyzr Expanded Summary:
    Netalyzr-expanded-summary.png

  • Netalyzr Client Transcript:
    Netalyzr-transcript-client.png

  • Netalyzr Server Transcript:
    Netalyzr-transcript-server.png

-- ChrisWelti - 15 Jan 2010

META FILEATTACHMENT attr="" autoattached="1" comment="Netalyzr Result Summary" date="1263575093" name="Netalyzr-result-summary.png" path="Netalyzr-result-summary.png" size="128759" user="Main.ChrisWelti" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="Netalyzr Client Transcript" date="1263575665" name="Netalyzr-transcript-client.png" path="Netalyzr-transcript-client.png" size="242537" user="Main.ChrisWelti" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="Netalyzr Server Transcript" date="1263575693" name="Netalyzr-transcript-server.png" path="Netalyzr-transcript-server.png" size="126100" user="Main.ChrisWelti" version="1"
META FILEATTACHMENT attr="" autoattached="1" comment="Netalyzr Expanded Summary" date="1263575129" name="Netalyzr-expanded-summary.png" path="Netalyzr-expanded-summary.png" size="146551" user="Main.ChrisWelti" version="1"
 
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