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Session Report

Summary:
Test run at: 2023-11-20 14:53:25 GMT
Client Prefix (v4): 85.140.8.x/24
Client AS (v4): 8359 (MTS)
IPv4 Probes: 69
Client Prefix (v6): 2a00:1fa2:42xx::/40
Client AS (v6): 8359 (MTS)
IPv6 Probes: 60
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 (85.140.8.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
85.140.8.x/24/318359natblock
85.140.8.x/24/308359natblock
85.140.8.x/24/298359natblock
85.140.8.x/24/288359natblock
85.140.8.x/24/278359natblock
85.140.8.x/24/268359natblock
85.140.8.x/24/258359natblock
85.140.8.x/24/248359natblock
85.140.9.x/24/238359natblock
85.140.10.x/24/228359natblock
85.140.12.x/24/218359natblock
85.140.0.x/24/208359natblock
85.140.24.x/24/198359natblock
85.140.40.x/24/1839811natblock
85.140.72.x/24/1748123natblock
85.140.136.x/24/168359natblock
85.141.8.x/24/158359natblock
85.142.8.x/24/143267natblock
85.136.8.x/24/136739natblock
85.132.8.x/24/12201167natblock
85.156.8.x/24/11719natblock
85.172.8.x/24/1025490natblock
85.204.8.x/24/912302natblock
85.12.8.x/24/8UNROUTEDnatblock

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
2a00:1fa2:42xx::/40/1208359sendto
2a00:1fa2:42xx::/40/1128359sendto
2a00:1fa2:42xx::/40/1048359sendto
2a00:1fa2:42xx::/40/968359sendto
2a00:1fa2:42xx::/40/888359sendto
2a00:1fa2:42xx::/40/808359sendto
2a00:1fa2:42xx::/40/728359sendto
2a00:1fa2:42xx::/40/648359sendto
2a00:1fa2:42xx::/40/568359sendto
2a00:1fa2:42xx::/40/488359sendto
2a00:1fa2:42xx::/40/408359sendto
2a00:1fa2:c2xx::/40/3228884sendto
2a00:1f22:42xx::/40/24UNROUTEDsendto
2a00:9fa2:42xx::/40/16UNROUTEDsendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.
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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