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Session Report

Summary:
Test run at: 2022-09-30 19:12:53 GMT
Client Prefix (v4): 131.0.60.x/24
Client AS (v4): 61704
IPv4 Probes: 60
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 Adjacent Netblock Testing:

Your host (131.0.60.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.0.60.x/24/3161704natblock
131.0.60.x/24/3061704natblock
131.0.60.x/24/2961704yes
131.0.60.x/24/2861704yes
131.0.60.x/24/2761704yes
131.0.60.x/24/2661704yes
131.0.60.x/24/2561704yes
131.0.60.x/24/2461704yes
131.0.61.x/24/2361704yes
131.0.62.x/24/2261704yes
131.0.56.x/24/2161874natblock
131.0.52.x/24/203549yes
131.0.44.x/24/19262621yes
131.0.28.x/24/1828210yes
131.0.124.x/24/17271133yes
131.0.188.x/24/1661708yes
131.1.60.x/24/153269yes
131.2.60.x/24/14749yes
131.4.60.x/24/13721yes
131.8.60.x/24/12749yes
131.16.60.x/24/11721yes
131.32.60.x/24/10385yes
131.64.60.x/24/927064yes
131.128.60.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)
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 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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