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Session Report

Summary:
Test run at: 2020-06-19 23:07:38 GMT
Client Prefix (v4): 201.33.174.x/24
Client AS (v4): 53181
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
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 (201.33.174.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
201.33.174.x/24/3153181natblock
201.33.174.x/24/3053181natblock
201.33.174.x/24/2953181natblock
201.33.174.x/24/2853181natblock
201.33.174.x/24/2753181natblock
201.33.174.x/24/2653181natblock
201.33.174.x/24/2553181natblock
201.33.174.x/24/2453181natblock
201.33.175.x/24/2353181natblock
201.33.172.x/24/2253181natblock
201.33.170.x/24/2153181natblock
201.33.166.x/24/2053181natblock
201.33.190.x/24/19262589natblock
201.33.142.x/24/1828274natblock
201.33.238.x/24/1728285natblock
201.33.46.x/24/1628624natblock
201.32.174.x/24/157738natblock
201.35.174.x/24/148167natblock
201.37.174.x/24/1328573natblock
201.41.174.x/24/128167natblock
201.49.174.x/24/1128602natblock
201.1.174.x/24/1027699natblock
201.97.174.x/24/98151natblock
201.161.174.x/24/816960natblock

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 10 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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