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Session Report

Summary:
Test run at: 2017-08-12 20:29:11 GMT
Client Prefix (v4): 80.100.158.x/24
Client AS (v4): 3265 (XS4ALL-NL)
IPv4 Probes: 120
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 (80.100.158.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
80.100.158.x/24/313265rewritten
80.100.158.x/24/303265rewritten
80.100.158.x/24/293265rewritten
80.100.158.x/24/283265rewritten
80.100.158.x/24/273265rewritten
80.100.158.x/24/263265rewritten
80.100.158.x/24/253265rewritten
80.100.158.x/24/243265rewritten
80.100.159.x/24/233265rewritten
80.100.156.x/24/223265rewritten
80.100.154.x/24/213265rewritten
80.100.150.x/24/203265rewritten
80.100.142.x/24/193265rewritten
80.100.190.x/24/183265rewritten
80.100.222.x/24/173265rewritten
80.100.30.x/24/163265rewritten
80.101.158.x/24/153265rewritten
80.102.158.x/24/1412479rewritten
80.96.158.x/24/1321294rewritten
80.108.158.x/24/126830rewritten
80.116.158.x/24/113269rewritten
80.68.158.x/24/1033982rewritten
80.36.158.x/24/93352rewritten
80.228.158.x/24/89145rewritten

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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