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Session Report

Summary:
Test run at: 2017-06-07 11:35:39 GMT
Client Prefix (v4): 201.211.156.x/24
Client AS (v4): 8048
IPv4 Probes: 119
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 (201.211.156.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
201.211.156.x/24/318048rewritten
201.211.156.x/24/308048rewritten
201.211.156.x/24/298048rewritten
201.211.156.x/24/288048rewritten
201.211.156.x/24/278048rewritten
201.211.156.x/24/268048rewritten
201.211.156.x/24/258048rewritten
201.211.156.x/24/248048rewritten
201.211.157.x/24/238048rewritten
201.211.158.x/24/228048rewritten
201.211.152.x/24/218048rewritten
201.211.148.x/24/208048rewritten
201.211.140.x/24/198048rewritten
201.211.188.x/24/188048rewritten
201.211.220.x/24/178048rewritten
201.211.28.x/24/168048rewritten
201.210.156.x/24/158048rewritten
201.209.156.x/24/148048rewritten
201.215.156.x/24/1322047rewritten
201.219.156.x/24/1220015rewritten
201.195.156.x/24/1111830rewritten
201.243.156.x/24/108048rewritten
201.147.156.x/24/98151rewritten
201.83.156.x/24/828573rewritten

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 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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