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Session Report

Summary:
Test run at: 2017-04-27 21:42:38 GMT
Client Prefix (v4): 122.56.211.x/24
Client AS (v4): 4771 (SPARKNZ)
IPv4 Probes: 91
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 (122.56.211.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
122.56.211.x/24/314771rewritten
122.56.211.x/24/304771rewritten
122.56.211.x/24/294771rewritten
122.56.211.x/24/284771rewritten
122.56.211.x/24/274771rewritten
122.56.211.x/24/264771rewritten
122.56.211.x/24/254771rewritten
122.56.211.x/24/244771rewritten
122.56.210.x/24/234771rewritten
122.56.209.x/24/224771rewritten
122.56.215.x/24/214771rewritten
122.56.219.x/24/20UNROUTEDrewritten
122.56.195.x/24/194771rewritten
122.56.243.x/24/18UNROUTEDrewritten
122.56.147.x/24/17UNROUTEDrewritten
122.56.83.x/24/164648rewritten
122.57.211.x/24/154771rewritten
122.58.211.x/24/144771rewritten
122.60.211.x/24/134771rewritten
122.48.211.x/24/124847rewritten
122.40.211.x/24/1117858rewritten
122.24.211.x/24/104713rewritten
122.120.211.x/24/93462rewritten
122.184.211.x/24/89498rewritten

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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