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Session Report

Summary:
Test run at: 2021-09-09 19:30:15 GMT
Client Prefix (v4): 186.225.16.x/24
Client AS (v4): 262760
IPv4 Probes: 66
Client Prefix (v6): 2804:414:10xx::/40
Client AS (v6): 262760
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

Meaning of result status in column:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.225.16.x/24/31262760rewritten
186.225.16.x/24/30262760rewritten
186.225.16.x/24/29262760rewritten
186.225.16.x/24/28262760rewritten
186.225.16.x/24/27262760rewritten
186.225.16.x/24/26262760rewritten
186.225.16.x/24/25262760rewritten
186.225.16.x/24/24262760rewritten
186.225.17.x/24/23262760rewritten
186.225.18.x/24/22262760rewritten
186.225.20.x/24/21262760rewritten
186.225.24.x/24/20262760rewritten
186.225.0.x/24/1928343rewritten
186.225.48.x/24/1828368rewritten
186.225.80.x/24/1753173rewritten
186.225.144.x/24/16262761rewritten
186.224.16.x/24/15262755rewritten
186.227.16.x/24/1453182rewritten
186.229.16.x/24/1326615rewritten
186.233.16.x/24/12262777rewritten
186.241.16.x/24/117738rewritten
186.193.16.x/24/1053078rewritten
186.161.16.x/24/921575rewritten
186.97.16.x/24/827831rewritten

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::1592001:770:1c: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:acb4yes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:414:10xx::/40/120262760yes
2804:414:10xx::/40/112262760yes
2804:414:10xx::/40/104262760yes
2804:414:10xx::/40/96262760yes
2804:414:10xx::/40/88262760yes
2804:414:10xx::/40/80262760yes
2804:414:10xx::/40/72262760yes
2804:414:10xx::/40/64262760yes
2804:414:10xx::/40/56262760yes
2804:414:10xx::/40/48262760yes
2804:414:10xx::/40/40262760yes
2804:414:90xx::/40/32262760yes
2804:494:10xx::/40/24UNROUTEDyes
2804:8414:10xx::/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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