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Session Report

Summary:
Test run at: 2021-08-10 11:47:23 GMT
Client Prefix (v4): 46.149.109.x/24
Client AS (v4): 208059 (GRMML)
IPv4 Probes: 66
Client Prefix (v6): 2a10:200:xx::/40
Client AS (v6): 208059 (GRMML)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable receivedreceived
Largest spoofable neighbor prefix length /8/16
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 (46.149.109.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
46.149.109.x/24/31208059yes
46.149.109.x/24/30208059yes
46.149.109.x/24/29208059yes
46.149.109.x/24/28208059yes
46.149.109.x/24/27208059yes
46.149.109.x/24/26208059yes
46.149.109.x/24/25208059yes
46.149.109.x/24/24208059yes
46.149.108.x/24/238681yes
46.149.111.x/24/22212446yes
46.149.105.x/24/21UNROUTEDno
46.149.101.x/24/2049830yes
46.149.125.x/24/1952092yes
46.149.77.x/24/18196936yes
46.149.45.x/24/1751973yes
46.149.237.x/24/1652175yes
46.148.109.x/24/1548940yes
46.151.109.x/24/1450802yes
46.145.109.x/24/131136yes
46.157.109.x/24/122119yes
46.133.109.x/24/1121497yes
46.181.109.x/24/1039927yes
46.213.109.x/24/929256yes
46.21.109.x/24/842708yes

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
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 able to spoof routable, non-adjacent source addresses through the first 10 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::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242yes
2001:48d0:101:501::1592001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247yes
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4yes
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
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
2a10:200:xx::/40/120208059yes
2a10:200:xx::/40/112208059yes
2a10:200:xx::/40/104208059yes
2a10:200:xx::/40/96208059yes
2a10:200:xx::/40/88208059yes
2a10:200:xx::/40/80208059yes
2a10:200:xx::/40/72208059yes
2a10:200:xx::/40/64208059yes
2a10:200:xx::/40/56208059yes
2a10:200:xx::/40/48208059yes
2a10:200:xx::/40/40208059yes
2a10:200:80xx::/40/32UNROUTEDyes
2a10:280:xx::/40/24UNROUTEDyes
2a10:8200:xx::/40/16UNROUTEDyes

Meaning of status in Received column:

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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