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Session Report

Summary:
Test run at: 2021-08-16 20:49:00 GMT
Client Prefix (v4): 201.139.83.x/24
Client AS (v4): 61449
IPv4 Probes: 66
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 (201.139.83.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
201.139.83.x/24/3161449natblock
201.139.83.x/24/3061449natblock
201.139.83.x/24/2961449natblock
201.139.83.x/24/2861449natblock
201.139.83.x/24/2761449natblock
201.139.83.x/24/2661449natblock
201.139.83.x/24/2561449natblock
201.139.83.x/24/2461449natblock
201.139.82.x/24/2361449natblock
201.139.81.x/24/2261449natblock
201.139.87.x/24/21262752natblock
201.139.91.x/24/2061833natblock
201.139.67.x/24/19UNROUTEDnatblock
201.139.115.x/24/18263114natblock
201.139.19.x/24/1711172natblock
201.139.211.x/24/1628503natblock
201.138.83.x/24/158151natblock
201.137.83.x/24/148151natblock
201.143.83.x/24/138151natblock
201.131.83.x/24/1228134natblock
201.155.83.x/24/118151natblock
201.171.83.x/24/108151natblock
201.203.83.x/24/911830natblock
201.11.83.x/24/88167natblock

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 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 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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