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Session Report

Summary:
Test run at: 2022-07-30 15:39:01 GMT
Client Prefix (v4): 212.78.193.x/24
Client AS (v4): 33915 (TNF-AS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (212.78.193.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
212.78.193.x/24/3133915natblock
212.78.193.x/24/3033915natblock
212.78.193.x/24/2933915natblock
212.78.193.x/24/2833915natblock
212.78.193.x/24/2733915natblock
212.78.193.x/24/2633915natblock
212.78.193.x/24/2533915natblock
212.78.193.x/24/2433915natblock
212.78.192.x/24/2333915natblock
212.78.195.x/24/2233915natblock
212.78.197.x/24/2133915natblock
212.78.201.x/24/2033915natblock
212.78.209.x/24/1933915natblock
212.78.225.x/24/1815533natblock
212.78.129.x/24/176739natblock
212.78.65.x/24/1616339natblock
212.79.193.x/24/1521198natblock
212.76.193.x/24/1412571natblock
212.74.193.x/24/1321365natblock
212.70.193.x/24/128396natblock
212.94.193.x/24/1112409natblock
212.110.193.x/24/109132natblock
212.14.193.x/24/934205natblock
212.206.193.x/24/8702natblock

Meaning of status in Received column:

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 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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