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Session Report

Summary:
Test run at: 2018-10-16 16:43:45 GMT
Client Prefix (v4): 138.36.179.x/24
Client AS (v4): 52568
IPv4 Probes: 124
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none

Meaning of result status in column:

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 (138.36.179.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.36.179.x/24/3152568rewritten
138.36.179.x/24/3052568rewritten
138.36.179.x/24/2952568rewritten
138.36.179.x/24/2852568rewritten
138.36.179.x/24/2752568rewritten
138.36.179.x/24/2652568rewritten
138.36.179.x/24/2552568rewritten
138.36.179.x/24/2452568rewritten
138.36.178.x/24/2352568rewritten
138.36.177.x/24/2252568rewritten
138.36.183.x/24/21262272rewritten
138.36.187.x/24/2052968rewritten
138.36.163.x/24/1952610rewritten
138.36.147.x/24/18265515rewritten
138.36.243.x/24/17264589rewritten
138.36.51.x/24/1653190rewritten
138.37.179.x/24/15198864rewritten
138.38.179.x/24/14786rewritten
138.32.179.x/24/1318701rewritten
138.44.179.x/24/127575rewritten
138.52.179.x/24/11UNROUTEDrewritten
138.4.179.x/24/10766rewritten
138.100.179.x/24/9766rewritten
138.164.179.x/24/8721rewritten

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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