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Session Report

Summary:
Test run at: 2017-08-23 21:25:44 GMT
Client Prefix (v4): 202.67.41.x/24
Client AS (v4): 45727 (THREE-AS-ID)
IPv4 Probes: 131
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 (202.67.41.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
202.67.41.x/24/3145727rewritten
202.67.41.x/24/3045727rewritten
202.67.41.x/24/2945727rewritten
202.67.41.x/24/2845727rewritten
202.67.41.x/24/2745727rewritten
202.67.41.x/24/2645727rewritten
202.67.41.x/24/2545727rewritten
202.67.41.x/24/2445727rewritten
202.67.40.x/24/2345727rewritten
202.67.43.x/24/2245727rewritten
202.67.45.x/24/2145727rewritten
202.67.33.x/24/2045727rewritten
202.67.57.x/24/1923784rewritten
202.67.9.x/24/1824195rewritten
202.67.105.x/24/179443rewritten
202.67.169.x/24/164645rewritten
202.66.41.x/24/154058rewritten
202.65.41.x/24/1410131rewritten
202.71.41.x/24/13UNROUTEDrewritten
202.75.41.x/24/1217971rewritten
202.83.41.x/24/1117465rewritten
202.99.41.x/24/104808rewritten
202.3.41.x/24/99443rewritten
202.195.41.x/24/84538rewritten

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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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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