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Session Report

Summary:
Test run at: 2017-07-13 20:12:32 GMT
Client Prefix (v4): 76.4.123.x/24
Client AS (v4): 209 (CENTURYLINK-US-LEGACY-QWEST)
IPv4 Probes: 117
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable blocked
Largest spoofable neighbor prefix length none

Meaning of result status in column:

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 (76.4.123.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
76.4.123.x/24/31209sendto
76.4.123.x/24/30209sendto
76.4.123.x/24/29209sendto
76.4.123.x/24/28209sendto
76.4.123.x/24/27209sendto
76.4.123.x/24/26209sendto
76.4.123.x/24/25209sendto
76.4.123.x/24/24209sendto
76.4.122.x/24/23209sendto
76.4.121.x/24/22209sendto
76.4.127.x/24/21209sendto
76.4.115.x/24/20209sendto
76.4.107.x/24/19209sendto
76.4.91.x/24/18209sendto
76.4.59.x/24/17209sendto
76.4.251.x/24/16209sendto
76.5.123.x/24/15209sendto
76.6.123.x/24/14209sendto
76.0.123.x/24/13209sendto
76.12.123.x/24/1220021sendto
76.20.123.x/24/117922sendto
76.36.123.x/24/10UNROUTEDsendto
76.68.123.x/24/9577sendto
76.132.123.x/24/87922sendto

Meaning of status in Received column:

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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