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Session Report

Summary:
Test run at: 2023-10-19 19:25:34 GMT
Client Prefix (v4): 66.244.20.x/24
Client AS (v4): 23483 (SHASTACOE)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /31
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 (66.244.20.x/24) can spoof 1 neighboring addresses (within your /31 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
66.244.20.x/24/3123483yes
66.244.20.x/24/3023483sendto
66.244.20.x/24/2923483sendto
66.244.20.x/24/2823483sendto
66.244.20.x/24/2723483sendto
66.244.20.x/24/2623483sendto
66.244.20.x/24/2523483sendto
66.244.20.x/24/2423483sendto
66.244.21.x/24/2323483sendto
66.244.22.x/24/2223483sendto
66.244.16.x/24/2123483sendto
66.244.28.x/24/2023483sendto
66.244.4.x/24/1923483sendto
66.244.52.x/24/1823483sendto
66.244.84.x/24/1711550sendto
66.244.148.x/24/1627589sendto
66.245.20.x/24/157029sendto
66.246.20.x/24/148001sendto
66.240.20.x/24/137922sendto
66.252.20.x/24/1223522sendto
66.228.20.x/24/1111233sendto
66.212.20.x/24/108100sendto
66.180.20.x/24/919627sendto
66.116.20.x/24/85742sendto

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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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