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Session Report

Summary:
Test run at: 2022-05-30 03:51:21 GMT
Client Prefix (v4): 66.73.10.x/24
Client AS (v4): 7018 (ATT-INTERNET4)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.
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 (66.73.10.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
66.73.10.x/24/317018sendto
66.73.10.x/24/307018sendto
66.73.10.x/24/297018sendto
66.73.10.x/24/287018sendto
66.73.10.x/24/277018sendto
66.73.10.x/24/267018sendto
66.73.10.x/24/257018sendto
66.73.10.x/24/247018sendto
66.73.11.x/24/237018sendto
66.73.8.x/24/227018sendto
66.73.14.x/24/217018sendto
66.73.2.x/24/207018sendto
66.73.26.x/24/197018sendto
66.73.42.x/24/187018sendto
66.73.74.x/24/177018sendto
66.73.138.x/24/167018sendto
66.72.10.x/24/157018sendto
66.75.10.x/24/1420001sendto
66.77.10.x/24/13209sendto
66.65.10.x/24/1212271natblock
66.89.10.x/24/112828sendto
66.105.10.x/24/102828sendto
66.9.10.x/24/918885sendto
66.201.10.x/24/8394513sendto

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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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