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Session Report

Summary:
Test run at: 2021-04-02 19:52:58 GMT
Client Prefix (v4): 67.190.123.x/24
Client AS (v4): 7922 (COMCAST-7922)
IPv4 Probes: 66
Client Prefix (v6): 2600:6ce7:xx::/40
Client AS (v6): 16787 (CHARTER-16787-DC)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable rewrittenunknown
Largest spoofable neighbor prefix length nonenone
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 (67.190.123.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
67.190.123.x/24/317922sendto
67.190.123.x/24/307922sendto
67.190.123.x/24/297922sendto
67.190.123.x/24/287922sendto
67.190.123.x/24/277922sendto
67.190.123.x/24/267922sendto
67.190.123.x/24/257922sendto
67.190.123.x/24/247922sendto
67.190.122.x/24/237922sendto
67.190.121.x/24/227922sendto
67.190.127.x/24/217922sendto
67.190.115.x/24/207922sendto
67.190.107.x/24/197922sendto
67.190.91.x/24/187922sendto
67.190.59.x/24/177922sendto
67.190.251.x/24/167922sendto
67.191.123.x/24/157922sendto
67.188.123.x/24/147922sendto
67.186.123.x/24/137922sendto
67.182.123.x/24/127922sendto
67.174.123.x/24/117922sendto
67.158.123.x/24/107029sendto
67.254.123.x/24/912271sendto
67.62.123.x/24/87029sendto

Meaning of status in Received column:

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.
IPv6 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.

  

  
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2600:6ce7:xx::/40/12016787no
2600:6ce7:xx::/40/11216787no
2600:6ce7:xx::/40/10416787no
2600:6ce7:xx::/40/9616787no
2600:6ce7:xx::/40/8816787no
2600:6ce7:xx::/40/8016787no
2600:6ce7:xx::/40/7216787no
2600:6ce7:xx::/40/6416787no
2600:6ce7:xx::/40/5616787no
2600:6ce7:xx::/40/4816787no
2600:6ce7:xx::/40/4016787no
2600:6ce7:80xx::/40/3216787no
2600:6c67:xx::/40/2433588no
2600:ece7:xx::/40/16UNROUTEDno

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
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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