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Session Report

Summary:
Test run at: 2021-11-23 07:46:49 GMT
Client Prefix (v4): 159.196.156.x/24
Client AS (v4): 4764 (WIDEBAND-AS-AP)
IPv4 Probes: 66
Client Prefix (v6): 2001:8004:44xx::/40
Client AS (v6): 1221 (ASN-TELSTRA)
IPv6 Probes: 56
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

Meaning of result status in column:

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 (159.196.156.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
159.196.156.x/24/314764rewritten
159.196.156.x/24/304764rewritten
159.196.156.x/24/294764rewritten
159.196.156.x/24/284764rewritten
159.196.156.x/24/274764rewritten
159.196.156.x/24/264764rewritten
159.196.156.x/24/254764rewritten
159.196.156.x/24/244764rewritten
159.196.157.x/24/234764rewritten
159.196.158.x/24/224764rewritten
159.196.152.x/24/214764rewritten
159.196.148.x/24/204764rewritten
159.196.140.x/24/194764rewritten
159.196.188.x/24/184764rewritten
159.196.220.x/24/174764rewritten
159.196.28.x/24/164764rewritten
159.197.156.x/24/1533657rewritten
159.198.156.x/24/14UNROUTEDrewritten
159.192.156.x/24/13131090rewritten
159.204.156.x/24/1216793rewritten
159.212.156.x/24/1111052rewritten
159.228.156.x/24/10UNROUTEDrewritten
159.132.156.x/24/9UNROUTEDrewritten
159.68.156.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 probes:
Spoofed source addressDestinationReceived
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
2001:8004:44xx::/40/1201221yes
2001:8004:44xx::/40/1121221yes
2001:8004:44xx::/40/1041221yes
2001:8004:44xx::/40/961221yes
2001:8004:44xx::/40/881221yes
2001:8004:44xx::/40/801221yes
2001:8004:44xx::/40/721221yes
2001:8004:44xx::/40/641221yes
2001:8004:44xx::/40/561221no
2001:8004:44xx::/40/481221no
2001:8004:44xx::/40/401221no
2001:8004:c4xx::/40/321221no
2001:8084:44xx::/40/241221no
2001:4:44xx::/40/16UNROUTEDno

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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