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Session Report

Summary:
Test run at: 2022-10-05 15:28:35 GMT
Client Prefix (v4): 94.67.40.x/24
Client AS (v4): 6799 (OTENET-GR)
IPv4 Probes: 60
Client Prefix (v6): 2a02:587:d7xx::/40
Client AS (v6): 6799 (OTENET-GR)
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/56
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 (94.67.40.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
94.67.40.x/24/316799sendto
94.67.40.x/24/306799rewritten
94.67.40.x/24/296799rewritten
94.67.40.x/24/286799rewritten
94.67.40.x/24/276799rewritten
94.67.40.x/24/266799rewritten
94.67.40.x/24/256799sendto
94.67.40.x/24/246799sendto
94.67.41.x/24/236799sendto
94.67.42.x/24/226799rewritten
94.67.44.x/24/216799rewritten
94.67.32.x/24/206799rewritten
94.67.56.x/24/196799rewritten
94.67.8.x/24/186799rewritten
94.67.104.x/24/176799rewritten
94.67.168.x/24/166799rewritten
94.66.40.x/24/156799rewritten
94.65.40.x/24/146799rewritten
94.71.40.x/24/136799rewritten
94.75.40.x/24/1228812sendto
94.83.40.x/24/113269rewritten
94.99.40.x/24/1025019rewritten
94.3.40.x/24/95607sendto
94.195.40.x/24/85607sendto

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.
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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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
2a02:587:d7xx::/40/1206799yes
2a02:587:d7xx::/40/1126799yes
2a02:587:d7xx::/40/1046799yes
2a02:587:d7xx::/40/966799yes
2a02:587:d7xx::/40/886799sendto
2a02:587:d7xx::/40/806799sendto
2a02:587:d7xx::/40/726799yes
2a02:587:d7xx::/40/646799yes
2a02:587:d7xx::/40/566799yes
2a02:587:d7xx::/40/486799sendto
2a02:587:d7xx::/40/406799no
2a02:587:57xx::/40/326799sendto
2a02:507:d7xx::/40/245538sendto
2a02:8587:d7xx::/40/16UNROUTEDsendto

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)
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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