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Center for Applied Internet Data Analysis
Session Report

Test run at: 2017-09-07 20:43:05 GMT
Client Prefix (v4): 86.49.57.x/24
Client AS (v4): 6830 (LGI-UPC)
IPv4 Probes: 117

Egress spoofing summary
Address type IPv4
Private rewritten
Routable rewritten
Largest spoofable neighbor prefix none

Warnings:

  • Your host is behind a Network Address Translation (NAT) router or firewall which rewrites the source addresses of the test traffic. To test your provider's network further, you must remove the NAT/firewall/router and connect directly.

    IPv4 AS Route:

    This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run.
    
    

    IPv4 Adjacent Netblock Testing:

    Your host (86.49.57.x/24) can spoof 0 neighboring addresses


    Spoofed IP (anon)Prefix
    Length
    ASN of
    Spoofed IP
    Received
    86.49.57.x/24/316830rewritten
    86.49.57.x/24/306830rewritten
    86.49.57.x/24/296830rewritten
    86.49.57.x/24/286830rewritten
    86.49.57.x/24/276830rewritten
    86.49.57.x/24/266830rewritten
    86.49.57.x/24/256830rewritten
    86.49.57.x/24/246830rewritten
    86.49.56.x/24/236830rewritten
    86.49.59.x/24/226830rewritten
    86.49.61.x/24/216830rewritten
    86.49.49.x/24/206830rewritten
    86.49.41.x/24/196830rewritten
    86.49.25.x/24/186830rewritten
    86.49.121.x/24/176830rewritten
    86.49.185.x/24/166830rewritten
    86.48.57.x/24/1516095rewritten
    86.51.57.x/24/1435819rewritten
    86.53.57.x/24/138190rewritten
    86.57.57.x/24/1249100rewritten
    86.33.57.x/24/111257rewritten
    86.17.57.x/24/105089rewritten
    86.113.57.x/24/99142rewritten
    86.177.57.x/24/82856rewritten

    Meaning of status in Received column:

    rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

    IPv4 Egress Filtering Depth:

    The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
    Summary:
    The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
    Feedback:
    We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
      Last Modified: