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Session Report

Summary:
Test run at: 2022-10-04 20:50:35 GMT
Client Prefix (v4): 74.93.66.x/24
Client AS (v4): 7922 (COMCAST-7922)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (74.93.66.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
74.93.66.x/24/317922natblock
74.93.66.x/24/307922natblock
74.93.66.x/24/297922natblock
74.93.66.x/24/287922natblock
74.93.66.x/24/277922natblock
74.93.66.x/24/267922natblock
74.93.66.x/24/257922natblock
74.93.66.x/24/247922natblock
74.93.67.x/24/237922natblock
74.93.64.x/24/227922natblock
74.93.70.x/24/217922natblock
74.93.74.x/24/207922natblock
74.93.82.x/24/197922natblock
74.93.98.x/24/187922natblock
74.93.2.x/24/177922natblock
74.93.194.x/24/167922natblock
74.92.66.x/24/157922natblock
74.95.66.x/24/147922natblock
74.89.66.x/24/136128natblock
74.85.66.x/24/1211404natblock
74.77.66.x/24/1111351natblock
74.125.66.x/24/10396982natblock
74.29.66.x/24/97922natblock
74.221.66.x/24/829979natblock

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.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 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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