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Session Report

Summary:
Test run at: 2021-12-07 14:57:58 GMT
Client Prefix (v4): 200.169.8.x/24
Client AS (v4): 21574
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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 (200.169.8.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.169.8.x/24/3121574yes
200.169.8.x/24/3021574yes
200.169.8.x/24/2921574yes
200.169.8.x/24/2821574yes
200.169.8.x/24/2721574yes
200.169.8.x/24/2621574yes
200.169.8.x/24/2521574yes
200.169.8.x/24/2421574yes
200.169.9.x/24/2321574yes
200.169.10.x/24/2221574yes
200.169.12.x/24/2121574yes
200.169.0.x/24/2021574yes
200.169.24.x/24/1926606yes
200.169.40.x/24/1822515yes
200.169.72.x/24/17262318yes
200.169.136.x/24/168167yes
200.168.8.x/24/1527699yes
200.171.8.x/24/1427699yes
200.173.8.x/24/134230yes
200.161.8.x/24/1227699yes
200.185.8.x/24/1116685yes
200.137.8.x/24/101916yes
200.233.8.x/24/97465yes
200.41.8.x/24/83356yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

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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