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Session Report

Summary:
Test run at: 2022-09-26 04:06:34 GMT
Client Prefix (v4): 212.10.11.x/24
Client AS (v4): 197288 (STOFANET)
IPv4 Probes: 60
Client Prefix (v6): 2a03:7400:22xx::/40
Client AS (v6): 39642 (DK-ESS-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 /28/64
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 (212.10.11.x/24) can spoof 15 neighboring addresses (within your /28 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
212.10.11.x/24/31197288yes
212.10.11.x/24/30197288yes
212.10.11.x/24/29197288no
212.10.11.x/24/28197288yes
212.10.11.x/24/27197288no
212.10.11.x/24/26197288no
212.10.11.x/24/25197288no
212.10.11.x/24/24197288no
212.10.10.x/24/23197288no
212.10.9.x/24/22197288no
212.10.15.x/24/21197288no
212.10.3.x/24/20197288no
212.10.27.x/24/19197288no
212.10.43.x/24/18197288no
212.10.75.x/24/17197288no
212.10.139.x/24/16197288no
212.11.11.x/24/153257no
212.8.11.x/24/143209no
212.14.11.x/24/138286no
212.2.11.x/24/128190no
212.26.11.x/24/118895no
212.42.11.x/24/108838no
212.74.11.x/24/93257no
212.138.11.x/24/88895no

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)

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
2a03:7400:22xx::/40/12039642yes
2a03:7400:22xx::/40/11239642yes
2a03:7400:22xx::/40/10439642yes
2a03:7400:22xx::/40/9639642yes
2a03:7400:22xx::/40/8839642yes
2a03:7400:22xx::/40/8039642yes
2a03:7400:22xx::/40/7239642yes
2a03:7400:22xx::/40/6439642yes
2a03:7400:22xx::/40/5639642no
2a03:7400:22xx::/40/4839642no
2a03:7400:22xx::/40/4039642no
2a03:7400:a2xx::/40/3239642no
2a03:7480:22xx::/40/24UNROUTEDno
2a03:f400:22xx::/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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