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Session Report

Summary:
Test run at: 2017-09-21 13:04:28 GMT
Client Prefix (v4): 45.112.227.x/24
Client AS (v4): 4638 (IS-FJ-AS)
IPv4 Probes: 117
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 (45.112.227.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.112.227.x/24/314638rewritten
45.112.227.x/24/304638rewritten
45.112.227.x/24/294638rewritten
45.112.227.x/24/284638rewritten
45.112.227.x/24/274638rewritten
45.112.227.x/24/264638rewritten
45.112.227.x/24/254638rewritten
45.112.227.x/24/244638rewritten
45.112.226.x/24/234638rewritten
45.112.225.x/24/224638rewritten
45.112.231.x/24/21UNROUTEDrewritten
45.112.235.x/24/20UNROUTEDrewritten
45.112.243.x/24/19UNROUTEDrewritten
45.112.195.x/24/18133715rewritten
45.112.163.x/24/1717573rewritten
45.112.99.x/24/1623578rewritten
45.113.227.x/24/15132779rewritten
45.114.227.x/24/14133222rewritten
45.116.227.x/24/1324295rewritten
45.120.227.x/24/12UNROUTEDrewritten
45.96.227.x/24/1137069rewritten
45.80.227.x/24/10UNROUTEDrewritten
45.48.227.x/24/920001rewritten
45.240.227.x/24/824863rewritten

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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