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Session Report

Summary:
Test run at: 2016-12-13 00:59:17 GMT
Client Prefix (v4): 140.186.17.x/24
Client AS (v4): 11232 (MIDCO-NET)
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 (140.186.17.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
140.186.17.x/24/3111232rewritten
140.186.17.x/24/3011232rewritten
140.186.17.x/24/2911232rewritten
140.186.17.x/24/2811232rewritten
140.186.17.x/24/2711232rewritten
140.186.17.x/24/2611232rewritten
140.186.17.x/24/2511232rewritten
140.186.17.x/24/2411232rewritten
140.186.16.x/24/2311232rewritten
140.186.19.x/24/2211232rewritten
140.186.21.x/24/2111232rewritten
140.186.25.x/24/2011232rewritten
140.186.1.x/24/1911232rewritten
140.186.49.x/24/1811232rewritten
140.186.81.x/24/1711232rewritten
140.186.145.x/24/1611232rewritten
140.187.17.x/24/151452rewritten
140.184.17.x/24/148111rewritten
140.190.17.x/24/1314828rewritten
140.178.17.x/24/12768rewritten
140.170.17.x/24/11UNROUTEDrewritten
140.154.17.x/24/101580rewritten
140.250.17.x/24/94134rewritten
140.58.17.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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