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Session Report

Summary:
Test run at: 2016-12-02 08:22:23 GMT
Client Prefix (v4): 172.97.241.x/24
Client AS (v4): 11814 (DISTRIBUTEL-AS11814)
IPv4 Probes: 89
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 (172.97.241.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
172.97.241.x/24/3111814rewritten
172.97.241.x/24/3011814rewritten
172.97.241.x/24/2911814rewritten
172.97.241.x/24/2811814rewritten
172.97.241.x/24/2711814rewritten
172.97.241.x/24/2611814rewritten
172.97.241.x/24/2511814rewritten
172.97.241.x/24/2411814rewritten
172.97.240.x/24/2311814rewritten
172.97.243.x/24/2211814rewritten
172.97.245.x/24/2111814rewritten
172.97.249.x/24/2011814rewritten
172.97.225.x/24/1911814rewritten
172.97.209.x/24/1811814rewritten
172.97.177.x/24/1711814rewritten
172.97.113.x/24/1632911rewritten
172.96.241.x/24/15UNROUTEDrewritten
172.99.241.x/24/14UNROUTEDrewritten
172.101.241.x/24/1311351rewritten
172.105.241.x/24/12UNROUTEDrewritten
172.113.241.x/24/1120001rewritten
172.65.241.x/24/10UNROUTEDrewritten
172.33.241.x/24/921928rewritten
172.225.241.x/24/83257rewritten

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 16 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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