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Session Report

Summary:
Test run at: 2023-05-01 13:33:57 GMT
Client Prefix (v4): 151.35.161.x/24
Client AS (v4): 1267 (ASN-WINDTRE)
IPv4 Probes: 60
Client Prefix (v6): 2a02:b127:80xx::/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 rewrittenblocked
Routable rewrittenblocked
Largest spoofable neighbor prefix length none/64
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 (151.35.161.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
151.35.161.x/24/311267rewritten
151.35.161.x/24/301267rewritten
151.35.161.x/24/291267rewritten
151.35.161.x/24/281267rewritten
151.35.161.x/24/271267rewritten
151.35.161.x/24/261267rewritten
151.35.161.x/24/251267rewritten
151.35.161.x/24/241267rewritten
151.35.160.x/24/231267rewritten
151.35.163.x/24/221267rewritten
151.35.165.x/24/211267rewritten
151.35.169.x/24/201267rewritten
151.35.177.x/24/191267rewritten
151.35.129.x/24/181267rewritten
151.35.225.x/24/171267rewritten
151.35.33.x/24/161267rewritten
151.34.161.x/24/151267rewritten
151.33.161.x/24/141267rewritten
151.39.161.x/24/131267rewritten
151.43.161.x/24/121267rewritten
151.51.161.x/24/111267rewritten
151.3.161.x/24/101267rewritten
151.99.161.x/24/93269rewritten
151.163.161.x/24/8UNROUTEDrewritten

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.
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:b127:80xx::/40/1201267yes
2a02:b127:80xx::/40/1121267yes
2a02:b127:80xx::/40/1041267yes
2a02:b127:80xx::/40/961267yes
2a02:b127:80xx::/40/881267yes
2a02:b127:80xx::/40/801267yes
2a02:b127:80xx::/40/721267yes
2a02:b127:80xx::/40/641267yes
2a02:b127:80xx::/40/561267no
2a02:b127:80xx::/40/481267no
2a02:b127:80xx::/40/401267no
2a02:b127:xx::/40/321267no
2a02:b1a7:80xx::/40/241267no
2a02:3127:80xx::/40/166805no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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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