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Session Report

Summary:
Test run at: 2021-02-08 17:52:13 GMT
Client Prefix (v4): 109.190.217.x/24
Client AS (v4): 35540 (OVH-TELECOM)
IPv4 Probes: 66
Client Prefix (v6): 2a0c:b641:xx::/40
Client AS (v6): 212299 (DevBen_Network)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenreceived
Routable rewrittenreceived
Largest spoofable neighbor prefix length none/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.

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 (109.190.217.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
109.190.217.x/24/3135540rewritten
109.190.217.x/24/3035540rewritten
109.190.217.x/24/2935540rewritten
109.190.217.x/24/2835540rewritten
109.190.217.x/24/2735540rewritten
109.190.217.x/24/2635540rewritten
109.190.217.x/24/2535540rewritten
109.190.217.x/24/2435540rewritten
109.190.216.x/24/2335540rewritten
109.190.219.x/24/2235540rewritten
109.190.221.x/24/2135540rewritten
109.190.209.x/24/2035540rewritten
109.190.201.x/24/1935540rewritten
109.190.249.x/24/1835540rewritten
109.190.153.x/24/1735540rewritten
109.190.89.x/24/1635540rewritten
109.191.217.x/24/158369rewritten
109.188.217.x/24/1431213rewritten
109.186.217.x/24/131680rewritten
109.182.217.x/24/125603rewritten
109.174.217.x/24/114589rewritten
109.158.217.x/24/102856rewritten
109.254.217.x/24/920590rewritten
109.62.217.x/24/812389rewritten

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 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::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::1592001:630:212:225:225:90ff:fe0c:45a6yes
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::1592001:770:18:7:225:90ff:fe0c:acb4yes
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4yes
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a0c:b641:xx::/40/120212299yes
2a0c:b641:xx::/40/112212299yes
2a0c:b641:xx::/40/104212299yes
2a0c:b641:xx::/40/96212299yes
2a0c:b641:xx::/40/88212299no
2a0c:b641:xx::/40/80212299yes
2a0c:b641:xx::/40/72212299yes
2a0c:b641:xx::/40/64212299yes
2a0c:b641:xx::/40/56212299yes
2a0c:b641:xx::/40/48212299yes
2a0c:b641:xx::/40/40UNROUTEDyes
2a0c:b641:80xx::/40/32UNROUTEDyes
2a0c:b6c1:xx::/40/24UNROUTEDyes
2a0c:3641:xx::/40/16UNROUTEDyes

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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