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Session Report

Summary:
Test run at: 2023-06-09 04:38:14 GMT
Client Prefix (v4): 213.109.212.x/24
Client AS (v4): 197556 (TNS)
IPv4 Probes: 60
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 (213.109.212.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
213.109.212.x/24/31197556rewritten
213.109.212.x/24/30197556rewritten
213.109.212.x/24/29197556rewritten
213.109.212.x/24/28197556rewritten
213.109.212.x/24/27197556rewritten
213.109.212.x/24/26197556rewritten
213.109.212.x/24/25197556rewritten
213.109.212.x/24/24197556rewritten
213.109.213.x/24/23197556rewritten
213.109.214.x/24/22197556rewritten
213.109.208.x/24/21206026rewritten
213.109.220.x/24/20206026rewritten
213.109.196.x/24/1962240rewritten
213.109.244.x/24/1858224rewritten
213.109.148.x/24/173257rewritten
213.109.84.x/24/16UNROUTEDrewritten
213.108.212.x/24/1542765rewritten
213.111.212.x/24/143326rewritten
213.105.212.x/24/135089rewritten
213.101.212.x/24/121257rewritten
213.125.212.x/24/1133915rewritten
213.77.212.x/24/105617rewritten
213.45.212.x/24/93269rewritten
213.237.212.x/24/85587rewritten

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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