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Session Report

Summary:
Test run at: 2020-04-12 23:37:32 GMT
Client Prefix (v4): 190.89.192.x/24
Client AS (v4): 270391
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
Largest spoofable neighbor prefix length /22

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 (190.89.192.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
190.89.192.x/24/31270391no
190.89.192.x/24/30270391no
190.89.192.x/24/29270391yes
190.89.192.x/24/28270391yes
190.89.192.x/24/27270391yes
190.89.192.x/24/26270391yes
190.89.192.x/24/25270391yes
190.89.192.x/24/24270391yes
190.89.193.x/24/23270391yes
190.89.194.x/24/22270391yes
190.89.196.x/24/21270409rewritten
190.89.200.x/24/20270394rewritten
190.89.208.x/24/19UNROUTEDrewritten
190.89.224.x/24/18UNROUTEDrewritten
190.89.128.x/24/17UNROUTEDrewritten
190.89.64.x/24/16270357rewritten
190.88.192.x/24/1511081rewritten
190.91.192.x/24/1427925rewritten
190.93.192.x/24/1328009rewritten
190.81.192.x/24/1212252rewritten
190.73.192.x/24/118048rewritten
190.121.192.x/24/1028049rewritten
190.25.192.x/24/919429rewritten
190.217.192.x/24/814117rewritten

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 10 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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