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Session Report

Summary:
Test run at: 2017-09-22 10:33:27 GMT
Client Prefix (v4): 51.7.29.x/24
Client AS (v4): 6871 (Plusnet)
IPv4 Probes: 117
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 (51.7.29.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
51.7.29.x/24/316871rewritten
51.7.29.x/24/306871rewritten
51.7.29.x/24/296871rewritten
51.7.29.x/24/286871rewritten
51.7.29.x/24/276871rewritten
51.7.29.x/24/266871rewritten
51.7.29.x/24/256871rewritten
51.7.29.x/24/246871rewritten
51.7.28.x/24/236871rewritten
51.7.31.x/24/226871rewritten
51.7.25.x/24/216871rewritten
51.7.21.x/24/206871rewritten
51.7.13.x/24/196871rewritten
51.7.61.x/24/186871rewritten
51.7.93.x/24/176871rewritten
51.7.157.x/24/166871rewritten
51.6.29.x/24/156871rewritten
51.5.29.x/24/14200517rewritten
51.3.29.x/24/13UNROUTEDrewritten
51.15.29.x/24/1212876rewritten
51.23.29.x/24/11UNROUTEDrewritten
51.39.29.x/24/1043766rewritten
51.71.29.x/24/9UNROUTEDrewritten
51.135.29.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 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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