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Session Report

Summary:
Test run at: 2023-02-18 06:30:55 GMT
Client Prefix (v4): 65.21.92.x/24
Client AS (v4): 24940 (HETZNER-AS)
IPv4 Probes: 60
Client Prefix (v6): 2a01:4f9:xx::/40
Client AS (v6): 24940 (HETZNER-AS)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
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.
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 (65.21.92.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
65.21.92.x/24/3124940no
65.21.92.x/24/3024940no
65.21.92.x/24/2924940no
65.21.92.x/24/2824940no
65.21.92.x/24/2724940no
65.21.92.x/24/2624940no
65.21.92.x/24/2524940no
65.21.92.x/24/2424940no
65.21.93.x/24/2324940no
65.21.94.x/24/2224940no
65.21.88.x/24/2124940no
65.21.84.x/24/2024940no
65.21.76.x/24/1924940no
65.21.124.x/24/1824940no
65.21.28.x/24/1724940no
65.21.220.x/24/1624940no
65.20.92.x/24/1520473no
65.23.92.x/24/1426554no
65.17.92.x/24/13UNROUTEDno
65.29.92.x/24/1210796no
65.5.92.x/24/116389no
65.53.92.x/24/103598no
65.85.92.x/24/94565no
65.149.92.x/24/8209no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

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::1592001:48d0:101:501::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
2a01:4f9:xx::/40/12024940yes
2a01:4f9:xx::/40/11224940yes
2a01:4f9:xx::/40/10424940yes
2a01:4f9:xx::/40/9624940yes
2a01:4f9:xx::/40/8824940yes
2a01:4f9:xx::/40/8024940yes
2a01:4f9:xx::/40/7224940yes
2a01:4f9:xx::/40/6424940yes
2a01:4f9:xx::/40/5624940no
2a01:4f9:xx::/40/4824940no
2a01:4f9:xx::/40/4024940no
2a01:4f9:80xx::/40/3224940no
2a01:479:xx::/40/24UNROUTEDno
2a01:84f9:xx::/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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