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Session Report

Summary:
Test run at: 2020-08-24 23:17:36 GMT
Client Prefix (v4): 87.121.72.x/24
Client AS (v4): 134697 (LAUNTEL-AS-AP)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
87.121.72.x/24/31134697rewritten
87.121.72.x/24/30134697rewritten
87.121.72.x/24/29134697rewritten
87.121.72.x/24/28134697rewritten
87.121.72.x/24/27134697rewritten
87.121.72.x/24/26134697rewritten
87.121.72.x/24/25134697rewritten
87.121.72.x/24/24134697rewritten
87.121.73.x/24/23134697rewritten
87.121.74.x/24/22134697rewritten
87.121.76.x/24/2160784rewritten
87.121.64.x/24/2034224rewritten
87.121.88.x/24/1934577rewritten
87.121.104.x/24/1843561rewritten
87.121.8.x/24/1729030rewritten
87.121.200.x/24/1621413rewritten
87.120.72.x/24/1543561rewritten
87.123.72.x/24/148881rewritten
87.125.72.x/24/1312430rewritten
87.113.72.x/24/126871rewritten
87.105.72.x/24/1112741rewritten
87.89.72.x/24/105410rewritten
87.57.72.x/24/93292rewritten
87.249.72.x/24/815641rewritten

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 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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