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Session Report

Summary:
Test run at: 2022-01-31 22:11:33 GMT
Client Prefix (v4): 131.0.31.x/24
Client AS (v4): 28210
IPv4 Probes: 63
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 received
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 (131.0.31.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.0.31.x/24/3128210yes
131.0.31.x/24/3028210yes
131.0.31.x/24/2928210yes
131.0.31.x/24/2828210yes
131.0.31.x/24/2728210yes
131.0.31.x/24/2628210yes
131.0.31.x/24/2528210yes
131.0.31.x/24/2428210yes
131.0.30.x/24/2328210yes
131.0.29.x/24/2228210yes
131.0.27.x/24/2128604yes
131.0.23.x/24/2028327yes
131.0.15.x/24/1952644yes
131.0.63.x/24/1861704yes
131.0.95.x/24/1761871yes
131.0.159.x/24/1661705yes
131.1.31.x/24/153269yes
131.2.31.x/24/14749yes
131.4.31.x/24/13721yes
131.8.31.x/24/12749yes
131.16.31.x/24/11721yes
131.32.31.x/24/10385yes
131.64.31.x/24/927064yes
131.128.31.x/24/814348yes

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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