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Session Report

Summary:
Test run at: 2017-03-15 14:49:54 GMT
Client Prefix (v4): 88.221.209.x/24
Client AS (v4): 12222 (AKAMAI)
IPv4 Probes: 90
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 (88.221.209.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
88.221.209.x/24/3112222rewritten
88.221.209.x/24/3012222rewritten
88.221.209.x/24/2912222rewritten
88.221.209.x/24/2812222rewritten
88.221.209.x/24/2712222rewritten
88.221.209.x/24/2612222rewritten
88.221.209.x/24/2512222rewritten
88.221.209.x/24/2412222rewritten
88.221.208.x/24/2312222rewritten
88.221.211.x/24/2220940rewritten
88.221.213.x/24/2134164rewritten
88.221.217.x/24/208966rewritten
88.221.193.x/24/193257rewritten
88.221.241.x/24/1820940rewritten
88.221.145.x/24/173269rewritten
88.221.81.x/24/1621342rewritten
88.220.209.x/24/1520804rewritten
88.223.209.x/24/1424852rewritten
88.217.209.x/24/138767rewritten
88.213.209.x/24/1216154rewritten
88.205.209.x/24/113239rewritten
88.253.209.x/24/109121rewritten
88.157.209.x/24/92860rewritten
88.93.209.x/24/82119rewritten

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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