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Session Report

Summary:
Test run at: 2022-08-06 00:28:53 GMT
Client Prefix (v4): 168.121.20.x/24
Client AS (v4): 264390
IPv4 Probes: 60
Client Prefix (v6): 2804:815c:xx::/40
Client AS (v6): 272449
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable rewrittenblocked
Largest spoofable neighbor prefix length none/32
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 (168.121.20.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
168.121.20.x/24/31264390rewritten
168.121.20.x/24/30264390rewritten
168.121.20.x/24/29264390rewritten
168.121.20.x/24/28264390rewritten
168.121.20.x/24/27264390rewritten
168.121.20.x/24/26264390rewritten
168.121.20.x/24/25264390rewritten
168.121.20.x/24/24264390rewritten
168.121.21.x/24/23264390rewritten
168.121.22.x/24/22264390rewritten
168.121.16.x/24/21263072rewritten
168.121.28.x/24/20265306rewritten
168.121.4.x/24/19265304rewritten
168.121.52.x/24/18262509rewritten
168.121.84.x/24/1752398rewritten
168.121.148.x/24/16262493rewritten
168.120.20.x/24/154274rewritten
168.123.20.x/24/14395400rewritten
168.125.20.x/24/13UNROUTEDrewritten
168.113.20.x/24/12UNROUTEDrewritten
168.105.20.x/24/116360rewritten
168.89.20.x/24/103741rewritten
168.57.20.x/24/91761rewritten
168.249.20.x/24/8UNROUTEDrewritten

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 able to spoof routable, non-adjacent source addresses through the first 1 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::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
2804:815c:xx::/40/120272449yes
2804:815c:xx::/40/112272449yes
2804:815c:xx::/40/104272449yes
2804:815c:xx::/40/96272449yes
2804:815c:xx::/40/88272449yes
2804:815c:xx::/40/80272449yes
2804:815c:xx::/40/72272449yes
2804:815c:xx::/40/64272449yes
2804:815c:xx::/40/56272449yes
2804:815c:xx::/40/48272449yes
2804:815c:xx::/40/40272449yes
2804:815c:80xx::/40/32272449yes
2804:81dc:xx::/40/24272481no
2804:15c:xx::/40/1611835no

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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