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Session Report

Summary:
Test run at: 2024-09-12 19:01:53 GMT
Client Prefix (v4): 144.202.123.x/24
Client AS (v4): 20473 (AS-CHOOPA)
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 none
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 (144.202.123.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
144.202.123.x/24/3120473rewritten
144.202.123.x/24/3020473rewritten
144.202.123.x/24/2920473rewritten
144.202.123.x/24/2820473rewritten
144.202.123.x/24/2720473rewritten
144.202.123.x/24/2620473rewritten
144.202.123.x/24/2520473rewritten
144.202.123.x/24/2420473rewritten
144.202.122.x/24/2320473rewritten
144.202.121.x/24/2220473rewritten
144.202.127.x/24/2120473rewritten
144.202.115.x/24/2020473rewritten
144.202.107.x/24/1920473rewritten
144.202.91.x/24/1820473rewritten
144.202.59.x/24/1720473rewritten
144.202.251.x/24/1617378rewritten
144.203.123.x/24/15UNROUTEDrewritten
144.200.123.x/24/14559rewritten
144.206.123.x/24/136801rewritten
144.194.123.x/24/12UNROUTEDrewritten
144.218.123.x/24/119342rewritten
144.234.123.x/24/10749rewritten
144.138.123.x/24/9135887rewritten
144.74.123.x/24/825978rewritten

Meaning of status in Received column:

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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