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Session Report

Summary:
Test run at: 2018-11-19 18:37:26 GMT
Client Prefix (v4): 209.131.62.x/24
Client AS (v4): 7233 (YAHOO-US)
IPv4 Probes: 124
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 (209.131.62.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
209.131.62.x/24/317233sendto
209.131.62.x/24/307233sendto
209.131.62.x/24/297233sendto
209.131.62.x/24/287233sendto
209.131.62.x/24/277233sendto
209.131.62.x/24/267233sendto
209.131.62.x/24/257233sendto
209.131.62.x/24/247233sendto
209.131.63.x/24/2310310sendto
209.131.60.x/24/2210310sendto
209.131.58.x/24/2110310sendto
209.131.54.x/24/207233sendto
209.131.46.x/24/19UNROUTEDsendto
209.131.30.x/24/1812129sendto
209.131.126.x/24/17UNROUTEDsendto
209.131.190.x/24/16UNROUTEDsendto
209.130.62.x/24/15UNROUTEDsendto
209.129.62.x/24/142152sendto
209.135.62.x/24/1311329sendto
209.139.62.x/24/122914natblock
209.147.62.x/24/112920sendto
209.163.62.x/24/107029sendto
209.195.62.x/24/96597sendto
209.3.62.x/24/8209sendto

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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