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Session Report

Summary:
Test run at: 2022-04-04 17:17:33 GMT
Client Prefix (v4): 193.29.13.x/24
Client AS (v4): 42397 (BUNEA-HIGH-VOLUME-NETWORK)
IPv4 Probes: 60
Client Prefix (v6): 2a10:9100:xx::/40
Client AS (v6): 47890 (UNMANAGED-DEDICATED-SERVERS)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length nonenone
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.
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 (193.29.13.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
193.29.13.x/24/3142397natblock
193.29.13.x/24/3042397natblock
193.29.13.x/24/2942397natblock
193.29.13.x/24/2842397natblock
193.29.13.x/24/2742397natblock
193.29.13.x/24/2642397natblock
193.29.13.x/24/2542397natblock
193.29.13.x/24/2442397natblock
193.29.12.x/24/2347890natblock
193.29.15.x/24/2242397natblock
193.29.9.x/24/2120677natblock
193.29.5.x/24/2051964natblock
193.29.29.x/24/19202596natblock
193.29.45.x/24/18209386natblock
193.29.77.x/24/1712625natblock
193.29.141.x/24/16UNROUTEDnatblock
193.28.13.x/24/15UNROUTEDnatblock
193.31.13.x/24/149009natblock
193.25.13.x/24/1330745natblock
193.21.13.x/24/12UNROUTEDnatblock
193.13.13.x/24/111257natblock
193.61.13.x/24/10786natblock
193.93.13.x/24/915461natblock
193.157.13.x/24/8224natblock

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.
IPv6 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.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a10:9100:xx::/40/12047890natblock
2a10:9100:xx::/40/11247890natblock
2a10:9100:xx::/40/10447890natblock
2a10:9100:xx::/40/9647890natblock
2a10:9100:xx::/40/8847890natblock
2a10:9100:xx::/40/8047890natblock
2a10:9100:xx::/40/7247890natblock
2a10:9100:xx::/40/6447890natblock
2a10:9100:xx::/40/5647890natblock
2a10:9100:xx::/40/4847890natblock
2a10:9100:xx::/40/40UNROUTEDnatblock
2a10:9100:80xx::/40/32UNROUTEDnatblock
2a10:9180:xx::/40/24UNROUTEDnatblock
2a10:1100:xx::/40/16UNROUTEDnatblock

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.
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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