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Session Report

Summary:
Test run at: 2021-11-24 22:55:56 GMT
Client Prefix (v4): 201.139.93.x/24
Client AS (v4): 61802
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none
Spoof status key
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.

Warnings:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
201.139.93.x/24/3161802rewritten
201.139.93.x/24/3061802rewritten
201.139.93.x/24/2961802rewritten
201.139.93.x/24/2861802rewritten
201.139.93.x/24/2761802rewritten
201.139.93.x/24/2661802rewritten
201.139.93.x/24/2561802rewritten
201.139.93.x/24/2461802rewritten
201.139.92.x/24/2361802rewritten
201.139.95.x/24/2261802rewritten
201.139.89.x/24/2161833rewritten
201.139.85.x/24/20262752rewritten
201.139.77.x/24/1928549rewritten
201.139.125.x/24/18263114rewritten
201.139.29.x/24/1711172rewritten
201.139.221.x/24/1661941rewritten
201.138.93.x/24/158151rewritten
201.137.93.x/24/148151rewritten
201.143.93.x/24/138151rewritten
201.131.93.x/24/1261944rewritten
201.155.93.x/24/118151rewritten
201.171.93.x/24/108151rewritten
201.203.93.x/24/911830rewritten
201.11.93.x/24/88167rewritten

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 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 2 IP hop(s).
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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