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Center for Applied Internet Data Analysis
Session Report

Test run at: 2017-09-19 17:16:08 GMT
Client Prefix (v4): 78.102.251.x/24
Client AS (v4): 6830 (LGI-UPC)
IPv4 Probes: 116

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

Warnings:

  • Your host is behind a filtering Network Address Translation (NAT) router or firewall. The NAT is blocking spoofed traffic rather than rewriting the source address. 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 (78.102.251.x/24) can spoof 0 neighboring addresses


    Spoofed IP (anon)Prefix
    Length
    ASN of
    Spoofed IP
    Received
    78.102.251.x/24/316830natblock
    78.102.251.x/24/306830natblock
    78.102.251.x/24/296830natblock
    78.102.251.x/24/286830natblock
    78.102.251.x/24/276830natblock
    78.102.251.x/24/266830natblock
    78.102.251.x/24/256830natblock
    78.102.251.x/24/246830natblock
    78.102.250.x/24/236830natblock
    78.102.249.x/24/226830natblock
    78.102.255.x/24/216830natblock
    78.102.243.x/24/206830natblock
    78.102.235.x/24/196830natblock
    78.102.219.x/24/186830natblock
    78.102.187.x/24/176830natblock
    78.102.123.x/24/166830natblock
    78.103.251.x/24/156830natblock
    78.100.251.x/24/1442298natblock
    78.98.251.x/24/136855natblock
    78.110.251.x/24/1243687natblock
    78.118.251.x/24/118228natblock
    78.70.251.x/24/103301natblock
    78.38.251.x/24/912880natblock
    78.230.251.x/24/812322natblock

    Meaning of status in Received column:

    natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

    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: