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Session Report

Summary:
Test run at: 2022-09-03 17:00:23 GMT
Client Prefix (v4): 186.226.3.x/24
Client AS (v4): 53176
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (186.226.3.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.226.3.x/24/3153176rewritten
186.226.3.x/24/3053176rewritten
186.226.3.x/24/2953176rewritten
186.226.3.x/24/2853176rewritten
186.226.3.x/24/2753176rewritten
186.226.3.x/24/2653176rewritten
186.226.3.x/24/2553176rewritten
186.226.3.x/24/2453176rewritten
186.226.2.x/24/2353176rewritten
186.226.1.x/24/2253176rewritten
186.226.7.x/24/2153176rewritten
186.226.11.x/24/2053176rewritten
186.226.19.x/24/19UNROUTEDrewritten
186.226.35.x/24/1828208rewritten
186.226.67.x/24/1728329rewritten
186.226.131.x/24/1628294rewritten
186.227.3.x/24/15262765rewritten
186.224.3.x/24/14262755rewritten
186.230.3.x/24/1326615rewritten
186.234.3.x/24/12UNROUTEDrewritten
186.242.3.x/24/117738rewritten
186.194.3.x/24/10270878rewritten
186.162.3.x/24/921575rewritten
186.98.3.x/24/83816rewritten

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 10 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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