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Session Report

Summary:
Test run at: 2023-06-07 12:34:35 GMT
Client Prefix (v4): 151.43.99.x/24
Client AS (v4): 1267 (ASN-WINDTRE)
IPv4 Probes: 60
Client Prefix (v6): 2a02:b123:xx::/40
Client AS (v6): 1267 (ASN-WINDTRE)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedunknown
Routable blockedunknown
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 (151.43.99.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
151.43.99.x/24/311267sendto
151.43.99.x/24/301267sendto
151.43.99.x/24/291267sendto
151.43.99.x/24/281267sendto
151.43.99.x/24/271267natblock
151.43.99.x/24/261267sendto
151.43.99.x/24/251267sendto
151.43.99.x/24/241267sendto
151.43.98.x/24/231267sendto
151.43.97.x/24/221267sendto
151.43.103.x/24/211267sendto
151.43.107.x/24/201267sendto
151.43.115.x/24/191267sendto
151.43.67.x/24/181267sendto
151.43.35.x/24/171267sendto
151.43.227.x/24/161267sendto
151.42.99.x/24/151267sendto
151.41.99.x/24/141267sendto
151.47.99.x/24/131267sendto
151.35.99.x/24/121267sendto
151.59.99.x/24/111267sendto
151.11.99.x/24/101267sendto
151.107.99.x/24/9UNROUTEDsendto
151.171.99.x/24/8UNROUTEDsendto

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

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
2001:48d0:101:501::1592001:40b0:7500:280::5458:517ano
2001:4978:1fb:6400::d22001:40b0:7500:280::5458:517ano
2001:49aa:111:aa00::112001:40b0:7500:280::5458:517ano
fd11:1111:1111::11112001:40b0:7500:280::5458:517ano
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a02:b123:xx::/40/1201267sendto
2a02:b123:xx::/40/1121267sendto
2a02:b123:xx::/40/1041267sendto
2a02:b123:xx::/40/961267sendto
2a02:b123:xx::/40/881267sendto
2a02:b123:xx::/40/801267sendto
2a02:b123:xx::/40/721267sendto
2a02:b123:xx::/40/641267sendto
2a02:b123:xx::/40/561267sendto
2a02:b123:xx::/40/481267sendto
2a02:b123:xx::/40/401267sendto
2a02:b123:80xx::/40/321267sendto
2a02:b1a3:xx::/40/241267sendto
2a02:3123:xx::/40/166805sendto

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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