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Session Report

Summary:
Test run at: 2020-02-26 12:52:10 GMT
Client Prefix (v4): 192.140.97.x/24
Client AS (v4): 266261
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
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 (192.140.97.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
192.140.97.x/24/31266261rewritten
192.140.97.x/24/30266261rewritten
192.140.97.x/24/29266261rewritten
192.140.97.x/24/28266261rewritten
192.140.97.x/24/27266261rewritten
192.140.97.x/24/26266261rewritten
192.140.97.x/24/25266261rewritten
192.140.97.x/24/24266261rewritten
192.140.96.x/24/23266261rewritten
192.140.99.x/24/22266261rewritten
192.140.101.x/24/21266256rewritten
192.140.105.x/24/20266262rewritten
192.140.113.x/24/19266243rewritten
192.140.65.x/24/18266550rewritten
192.140.33.x/24/17266201rewritten
192.140.225.x/24/1656233rewritten
192.141.97.x/24/15UNROUTEDrewritten
192.142.97.x/24/1436916rewritten
192.136.97.x/24/13UNROUTEDrewritten
192.132.97.x/24/12UNROUTEDrewritten
192.156.97.x/24/11UNROUTEDrewritten
192.172.97.x/24/10UNROUTEDrewritten
192.204.97.x/24/92914rewritten
192.12.97.x/24/8UNROUTEDrewritten

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 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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