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Center for Applied Internet Data Analysis
Session Report

Test run at: 2017-09-22 13:37:38 GMT
Client Prefix (v4): 78.24.12.x/24
Client AS (v4): 43541 (VSHOSTING)
IPv4 Probes: 117

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 (78.24.12.x/24) can spoof 0 neighboring addresses


    Spoofed IP (anon)Prefix
    Length
    ASN of
    Spoofed IP
    Received
    78.24.12.x/24/3143541natblock
    78.24.12.x/24/3043541natblock
    78.24.12.x/24/2943541natblock
    78.24.12.x/24/2843541natblock
    78.24.12.x/24/2743541natblock
    78.24.12.x/24/2643541natblock
    78.24.12.x/24/2543541natblock
    78.24.12.x/24/2443541natblock
    78.24.13.x/24/2343541natblock
    78.24.14.x/24/2243541natblock
    78.24.8.x/24/2143541natblock
    78.24.4.x/24/2043537natblock
    78.24.28.x/24/1943555natblock
    78.24.44.x/24/1834703natblock
    78.24.76.x/24/1743586natblock
    78.24.140.x/24/1643655natblock
    78.25.12.x/24/156703natblock
    78.26.12.x/24/14202204natblock
    78.28.12.x/24/1343679natblock
    78.16.12.x/24/122110natblock
    78.8.12.x/24/1112741natblock
    78.56.12.x/24/108764natblock
    78.88.12.x/24/929314natblock
    78.152.12.x/24/843118natblock

    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: