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Session Report

Summary:
Test run at: 2018-02-12 09:42:05 GMT
Client Prefix (v4): 14.139.153.x/24
Client AS (v4): 55824 (NKN-CORE-NW)
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 (14.139.153.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
14.139.153.x/24/3155824sendto
14.139.153.x/24/3055824sendto
14.139.153.x/24/2955824sendto
14.139.153.x/24/2855824sendto
14.139.153.x/24/2755824sendto
14.139.153.x/24/2655824sendto
14.139.153.x/24/2555824sendto
14.139.153.x/24/2455824sendto
14.139.152.x/24/2355824sendto
14.139.155.x/24/2255824sendto
14.139.157.x/24/2155824sendto
14.139.145.x/24/2055824sendto
14.139.137.x/24/1955824sendto
14.139.185.x/24/1855824sendto
14.139.217.x/24/1755824rewritten
14.139.25.x/24/1655824sendto
14.138.153.x/24/159943sendto
14.137.153.x/24/149482sendto
14.143.153.x/24/134755sendto
14.131.153.x/24/124847sendto
14.155.153.x/24/114134sendto
14.171.153.x/24/1045899sendto
14.203.153.x/24/97545sendto
14.11.153.x/24/82516sendto

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.
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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