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Session Report

Summary:
Test run at: 2022-08-03 09:10:56 GMT
Client Prefix (v4): 188.64.207.x/24
Client AS (v4): 16116
IPv4 Probes: 60
Client Prefix (v6): 2a02:6680:11xx::/40
Client AS (v6): 16116
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 (188.64.207.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
188.64.207.x/24/3116116rewritten
188.64.207.x/24/3016116rewritten
188.64.207.x/24/2916116rewritten
188.64.207.x/24/2816116rewritten
188.64.207.x/24/2716116rewritten
188.64.207.x/24/2616116rewritten
188.64.207.x/24/2516116rewritten
188.64.207.x/24/2416116rewritten
188.64.206.x/24/2316116rewritten
188.64.205.x/24/2216116rewritten
188.64.203.x/24/2116116rewritten
188.64.199.x/24/2061157rewritten
188.64.223.x/24/196844rewritten
188.64.239.x/24/1831237rewritten
188.64.143.x/24/1749999rewritten
188.64.79.x/24/168368rewritten
188.65.207.x/24/158292rewritten
188.66.207.x/24/1450010rewritten
188.68.207.x/24/1349505rewritten
188.72.207.x/24/1235415rewritten
188.80.207.x/24/113243rewritten
188.96.207.x/24/103209rewritten
188.0.207.x/24/9198541rewritten
188.192.207.x/24/83209rewritten

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
2a02:6680:11xx::/40/12016116yes
2a02:6680:11xx::/40/11216116yes
2a02:6680:11xx::/40/10416116yes
2a02:6680:11xx::/40/9616116yes
2a02:6680:11xx::/40/8816116yes
2a02:6680:11xx::/40/8016116yes
2a02:6680:11xx::/40/7216116yes
2a02:6680:11xx::/40/6416116yes
2a02:6680:11xx::/40/5616116no
2a02:6680:11xx::/40/4816116no
2a02:6680:11xx::/40/40UNROUTEDno
2a02:6680:91xx::/40/32UNROUTEDno
2a02:6600:11xx::/40/245377no
2a02:e680:11xx::/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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