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Session Report

Summary:
Test run at: 2021-08-07 16:00:25 GMT
Client Prefix (v4): 168.205.125.x/24
Client AS (v4): 263661
IPv4 Probes: 66
Client Prefix (v6): 2804:1128:89xx::/40
Client AS (v6): 263661
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 (168.205.125.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
168.205.125.x/24/31263661rewritten
168.205.125.x/24/30263661rewritten
168.205.125.x/24/29263661rewritten
168.205.125.x/24/28263661rewritten
168.205.125.x/24/27263661rewritten
168.205.125.x/24/26263661rewritten
168.205.125.x/24/25263661rewritten
168.205.125.x/24/24263661rewritten
168.205.124.x/24/23263661rewritten
168.205.127.x/24/22263661rewritten
168.205.121.x/24/21264679rewritten
168.205.117.x/24/20264678rewritten
168.205.109.x/24/19262683rewritten
168.205.93.x/24/1861493rewritten
168.205.61.x/24/17263641rewritten
168.205.253.x/24/16264892rewritten
168.204.125.x/24/15UNROUTEDrewritten
168.207.125.x/24/14UNROUTEDrewritten
168.201.125.x/24/136167rewritten
168.197.125.x/24/1213591rewritten
168.221.125.x/24/1120214rewritten
168.237.125.x/24/10UNROUTEDrewritten
168.141.125.x/24/953585rewritten
168.77.125.x/24/83551rewritten

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::1592001:610:510:115:192:42:115:98no
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: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:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
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
2804:1128:89xx::/40/120263661yes
2804:1128:89xx::/40/112263661yes
2804:1128:89xx::/40/104263661yes
2804:1128:89xx::/40/96263661yes
2804:1128:89xx::/40/88263661yes
2804:1128:89xx::/40/80263661yes
2804:1128:89xx::/40/72263661yes
2804:1128:89xx::/40/64263661yes
2804:1128:89xx::/40/56263661yes
2804:1128:89xx::/40/48263661yes
2804:1128:89xx::/40/40263661yes
2804:1128:9xx::/40/32263661yes
2804:11a8:89xx::/40/24UNROUTEDyes
2804:9128:89xx::/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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