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Session Report

Summary:
Test run at: 2021-08-14 17:08:03 GMT
Client Prefix (v4): 201.139.80.x/24
Client AS (v4): 61449
IPv4 Probes: 66
Client Prefix (v6): 2803:580:6xx::/40
Client AS (v6): 61449
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 (201.139.80.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
201.139.80.x/24/3161449rewritten
201.139.80.x/24/3061449rewritten
201.139.80.x/24/2961449rewritten
201.139.80.x/24/2861449rewritten
201.139.80.x/24/2761449rewritten
201.139.80.x/24/2661449rewritten
201.139.80.x/24/2561449rewritten
201.139.80.x/24/2461449rewritten
201.139.81.x/24/2361449rewritten
201.139.82.x/24/2261449rewritten
201.139.84.x/24/21262752rewritten
201.139.88.x/24/2061833rewritten
201.139.64.x/24/19UNROUTEDrewritten
201.139.112.x/24/18263114rewritten
201.139.16.x/24/1711172rewritten
201.139.208.x/24/1628503rewritten
201.138.80.x/24/158151rewritten
201.137.80.x/24/148151rewritten
201.143.80.x/24/138151rewritten
201.131.80.x/24/1228134rewritten
201.155.80.x/24/118151rewritten
201.171.80.x/24/108151rewritten
201.203.80.x/24/911830rewritten
201.11.80.x/24/88167rewritten

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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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::1592001:48d0:101:501::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
2803:580:6xx::/40/12061449yes
2803:580:6xx::/40/11261449yes
2803:580:6xx::/40/10461449yes
2803:580:6xx::/40/9661449yes
2803:580:6xx::/40/8861449yes
2803:580:6xx::/40/8061449yes
2803:580:6xx::/40/7261449yes
2803:580:6xx::/40/6461449yes
2803:580:6xx::/40/5661449no
2803:580:6xx::/40/4861449no
2803:580:6xx::/40/4061449no
2803:580:86xx::/40/3261449no
2803:500:6xx::/40/24262168no
2803:8580:6xx::/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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