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Session Report

Summary:
Test run at: 2020-08-12 04:09:04 GMT
Client Prefix (v4): 131.108.118.x/24
Client AS (v4): 264353
IPv4 Probes: 75
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 (131.108.118.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.108.118.x/24/31264353rewritten
131.108.118.x/24/30264353rewritten
131.108.118.x/24/29264353rewritten
131.108.118.x/24/28264353rewritten
131.108.118.x/24/27264353rewritten
131.108.118.x/24/26264353rewritten
131.108.118.x/24/25264353rewritten
131.108.118.x/24/24264353rewritten
131.108.119.x/24/23264353rewritten
131.108.116.x/24/22264353rewritten
131.108.114.x/24/2161677rewritten
131.108.126.x/24/2061689rewritten
131.108.102.x/24/1961672rewritten
131.108.86.x/24/18262521rewritten
131.108.54.x/24/1761671rewritten
131.108.246.x/24/1652928rewritten
131.109.118.x/24/1514464rewritten
131.110.118.x/24/14UNROUTEDrewritten
131.104.118.x/24/1331886rewritten
131.100.118.x/24/1261644rewritten
131.124.118.x/24/1115329rewritten
131.76.118.x/24/10721rewritten
131.44.118.x/24/9385rewritten
131.236.118.x/24/823859rewritten

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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