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Session Report

Summary:
Test run at: 2019-07-04 02:09:25 GMT
Client Prefix (v4): 176.10.131.x/24
Client AS (v4): 8473 (BAHNHOF)
IPv4 Probes: 93
Client Prefix (v6): 2001:470:xx::/40
Client AS (v6): 6939 (HURRICANE)
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.
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 (176.10.131.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
176.10.131.x/24/318473sendto
176.10.131.x/24/308473sendto
176.10.131.x/24/298473sendto
176.10.131.x/24/288473sendto
176.10.131.x/24/278473sendto
176.10.131.x/24/268473natblock
176.10.131.x/24/258473sendto
176.10.131.x/24/248473sendto
176.10.130.x/24/238473natblock
176.10.129.x/24/228473sendto
176.10.135.x/24/218473sendto
176.10.139.x/24/208473sendto
176.10.147.x/24/198473natblock
176.10.163.x/24/188473sendto
176.10.195.x/24/178473sendto
176.10.3.x/24/1634695sendto
176.11.131.x/24/1512929sendto
176.8.131.x/24/1415895sendto
176.14.131.x/24/138402sendto
176.2.131.x/24/1212638sendto
176.26.131.x/24/115607sendto
176.42.131.x/24/1034984sendto
176.74.131.x/24/935613sendto
176.138.131.x/24/85410natblock

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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