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Session Report

Summary:
Test run at: 2022-04-19 05:25:31 GMT
Client Prefix (v4): 154.0.8.x/24
Client AS (v4): 37680 (COOL-IDEAS)
IPv4 Probes: 60
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 (154.0.8.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
154.0.8.x/24/3137680rewritten
154.0.8.x/24/3037680rewritten
154.0.8.x/24/2937680rewritten
154.0.8.x/24/2837680rewritten
154.0.8.x/24/2737680rewritten
154.0.8.x/24/2637680rewritten
154.0.8.x/24/2537680rewritten
154.0.8.x/24/2437680rewritten
154.0.9.x/24/2337680rewritten
154.0.10.x/24/2237680rewritten
154.0.12.x/24/2137680rewritten
154.0.0.x/24/2037680rewritten
154.0.24.x/24/1937190rewritten
154.0.40.x/24/1837390rewritten
154.0.72.x/24/1737155rewritten
154.0.136.x/24/1637063rewritten
154.1.8.x/24/15UNROUTEDrewritten
154.2.8.x/24/14UNROUTEDrewritten
154.4.8.x/24/13UNROUTEDrewritten
154.8.8.x/24/121290rewritten
154.16.8.x/24/1161317rewritten
154.32.8.x/24/101290rewritten
154.64.8.x/24/9139646rewritten
154.128.8.x/24/837069rewritten

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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