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Session Report

Summary:
Test run at: 2023-09-18 00:03:53 GMT
Client Prefix (v4): 76.165.6.x/24
Client AS (v4): 32440 (LONI)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length /26
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 (76.165.6.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
76.165.6.x/24/3132440yes
76.165.6.x/24/3032440yes
76.165.6.x/24/2932440yes
76.165.6.x/24/2832440yes
76.165.6.x/24/2732440yes
76.165.6.x/24/2632440yes
76.165.6.x/24/2532440rewritten
76.165.6.x/24/2432440rewritten
76.165.7.x/24/2332440rewritten
76.165.4.x/24/2232440rewritten
76.165.2.x/24/2132440rewritten
76.165.14.x/24/2032440rewritten
76.165.22.x/24/1932440rewritten
76.165.38.x/24/1823294rewritten
76.165.70.x/24/1723207rewritten
76.165.134.x/24/1626333rewritten
76.164.6.x/24/157385rewritten
76.167.6.x/24/1420001rewritten
76.161.6.x/24/137029rewritten
76.173.6.x/24/1220001rewritten
76.181.6.x/24/1110796rewritten
76.133.6.x/24/107922rewritten
76.229.6.x/24/97018rewritten
76.37.6.x/24/811351rewritten

Meaning of status in Received column:

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 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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