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Session Report

Summary:
Test run at: 2020-08-25 21:38:52 GMT
Client Prefix (v4): 156.146.42.x/24
Client AS (v4): 60068 (CDN77)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (156.146.42.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
156.146.42.x/24/3160068rewritten
156.146.42.x/24/3060068rewritten
156.146.42.x/24/2960068rewritten
156.146.42.x/24/2860068rewritten
156.146.42.x/24/2760068rewritten
156.146.42.x/24/2660068rewritten
156.146.42.x/24/2560068rewritten
156.146.42.x/24/2460068rewritten
156.146.43.x/24/2360068rewritten
156.146.40.x/24/2260068rewritten
156.146.46.x/24/2160068rewritten
156.146.34.x/24/2060068rewritten
156.146.58.x/24/1960068rewritten
156.146.10.x/24/18UNROUTEDrewritten
156.146.106.x/24/17UNROUTEDrewritten
156.146.170.x/24/161448rewritten
156.147.42.x/24/154668rewritten
156.144.42.x/24/143743rewritten
156.150.42.x/24/13UNROUTEDrewritten
156.154.42.x/24/127786rewritten
156.130.42.x/24/11UNROUTEDrewritten
156.178.42.x/24/1036992rewritten
156.210.42.x/24/98452rewritten
156.18.42.x/24/81945rewritten

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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