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Session Report

Summary:
Test run at: 2018-01-24 09:36:53 GMT
Client Prefix (v4): 87.116.91.x/24
Client AS (v4): 9070 (Cooolbox)
IPv4 Probes: 102
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 (87.116.91.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
87.116.91.x/24/319070rewritten
87.116.91.x/24/309070natblock
87.116.91.x/24/299070rewritten
87.116.91.x/24/289070rewritten
87.116.91.x/24/279070rewritten
87.116.91.x/24/269070rewritten
87.116.91.x/24/259070rewritten
87.116.91.x/24/249070rewritten
87.116.90.x/24/239070rewritten
87.116.89.x/24/229070rewritten
87.116.95.x/24/21UNROUTEDrewritten
87.116.83.x/24/209070rewritten
87.116.75.x/24/198866rewritten
87.116.123.x/24/189070rewritten
87.116.27.x/24/1731027rewritten
87.116.219.x/24/1621021rewritten
87.117.91.x/24/1557356rewritten
87.118.91.x/24/1431103rewritten
87.112.91.x/24/136871rewritten
87.124.91.x/24/1235456rewritten
87.100.91.x/24/1135632rewritten
87.84.91.x/24/104589rewritten
87.52.91.x/24/93292rewritten
87.244.91.x/24/88681rewritten

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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 10 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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