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Session Report

Summary:
Test run at: 2019-03-25 10:10:52 GMT
Client Prefix (v4): 52.119.121.x/24
Client AS (v4): 32329 (MONKEYBRAINS)
IPv4 Probes: 116
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none

Meaning of result status in column:

receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
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. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (52.119.121.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
52.119.121.x/24/3132329natblock
52.119.121.x/24/3032329sendto
52.119.121.x/24/2932329sendto
52.119.121.x/24/2832329sendto
52.119.121.x/24/2732329sendto
52.119.121.x/24/2632329sendto
52.119.121.x/24/2532329natblock
52.119.121.x/24/2432329sendto
52.119.120.x/24/2332329sendto
52.119.123.x/24/2232329sendto
52.119.125.x/24/2132329natblock
52.119.113.x/24/2032329natblock
52.119.105.x/24/1922768natblock
52.119.89.x/24/1818616sendto
52.119.57.x/24/17395100sendto
52.119.249.x/24/16UNROUTEDnatblock
52.118.121.x/24/15UNROUTEDsendto
52.117.121.x/24/14UNROUTEDsendto
52.115.121.x/24/138075sendto
52.127.121.x/24/128070natblock
52.103.121.x/24/118075natblock
52.87.121.x/24/1014618sendto
52.55.121.x/24/914618natblock
52.247.121.x/24/88075sendto

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

IPv4 Outbound 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.
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