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Session Report

Summary:
Test run at: 2021-12-17 11:58:43 GMT
Client Prefix (v4): 74.96.110.x/24
Client AS (v4): 701 (UUNET)
IPv4 Probes: 63
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (74.96.110.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
74.96.110.x/24/31701sendto
74.96.110.x/24/30701sendto
74.96.110.x/24/29701sendto
74.96.110.x/24/28701sendto
74.96.110.x/24/27701sendto
74.96.110.x/24/26701sendto
74.96.110.x/24/25701sendto
74.96.110.x/24/24701sendto
74.96.111.x/24/23701sendto
74.96.108.x/24/22701sendto
74.96.106.x/24/21701sendto
74.96.102.x/24/20701sendto
74.96.126.x/24/19701sendto
74.96.78.x/24/18701sendto
74.96.46.x/24/17701sendto
74.96.238.x/24/16701natblock
74.97.110.x/24/15701sendto
74.98.110.x/24/14UNROUTEDsendto
74.100.110.x/24/13UNROUTEDsendto
74.104.110.x/24/12701sendto
74.112.110.x/24/1117253sendto
74.64.110.x/24/1012271sendto
74.32.110.x/24/97011sendto
74.224.110.x/24/88075sendto

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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