Skip to Content
[CAIDA - Center for Applied Internet Data Analysis logo]
Center for Applied Internet Data Analysis
Session Report

Test run at: 2017-09-09 04:18:32 GMT
Client Prefix (v4): 80.188.89.x/24
Client AS (v4): 5610 (O2-CZECH-REPUBLIC)
IPv4 Probes: 132

Egress spoofing summary
Address type IPv4
Private unknown
Routable unknown
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 (80.188.89.x/24) can spoof 0 neighboring addresses


    Spoofed IP (anon)Prefix
    Length
    ASN of
    Spoofed IP
    Received
    80.188.89.x/24/315610natblock
    80.188.89.x/24/305610natblock
    80.188.89.x/24/295610natblock
    80.188.89.x/24/285610natblock
    80.188.89.x/24/275610natblock
    80.188.89.x/24/265610natblock
    80.188.89.x/24/255610natblock
    80.188.89.x/24/245610natblock
    80.188.88.x/24/235610natblock
    80.188.91.x/24/225610natblock
    80.188.93.x/24/215610natblock
    80.188.81.x/24/2028725natblock
    80.188.73.x/24/195610natblock
    80.188.121.x/24/185610natblock
    80.188.25.x/24/175610natblock
    80.188.217.x/24/165610natblock
    80.189.89.x/24/156871natblock
    80.190.89.x/24/1415598natblock
    80.184.89.x/24/136412natblock
    80.180.89.x/24/123269natblock
    80.172.89.x/24/118426natblock
    80.156.89.x/24/103320natblock
    80.252.89.x/24/915830natblock
    80.60.89.x/24/81136natblock

    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: