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Session Report

Summary:
Test run at: 2016-11-15 19:37:08 GMT
Client Prefix (v4): 217.17.253.x/24
Client AS (v4): 5416
IPv4 Probes: 104
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 (217.17.253.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
217.17.253.x/24/315416rewritten
217.17.253.x/24/305416rewritten
217.17.253.x/24/295416rewritten
217.17.253.x/24/285416rewritten
217.17.253.x/24/275416rewritten
217.17.253.x/24/265416rewritten
217.17.253.x/24/255416rewritten
217.17.253.x/24/245416rewritten
217.17.252.x/24/235416rewritten
217.17.255.x/24/225416rewritten
217.17.249.x/24/215416rewritten
217.17.245.x/24/205416rewritten
217.17.237.x/24/195416rewritten
217.17.221.x/24/1831169rewritten
217.17.189.x/24/1715757rewritten
217.17.125.x/24/1650556rewritten
217.16.253.x/24/1525479rewritten
217.19.253.x/24/1460819rewritten
217.21.253.x/24/1328878rewritten
217.25.253.x/24/121257rewritten
217.1.253.x/24/113320rewritten
217.49.253.x/24/106805rewritten
217.81.253.x/24/93320rewritten
217.145.253.x/24/831416rewritten

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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