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Session Report

Summary:
Test run at: 2022-03-16 22:58:51 GMT
Client Prefix (v4): 138.36.168.x/24
Client AS (v4): 262300
IPv4 Probes: 60
Client Prefix (v6): 2804:788:3xx::/40
Client AS (v6): 262300
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 (138.36.168.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.36.168.x/24/31262300rewritten
138.36.168.x/24/30262300rewritten
138.36.168.x/24/29262300rewritten
138.36.168.x/24/28262300rewritten
138.36.168.x/24/27262300rewritten
138.36.168.x/24/26262300rewritten
138.36.168.x/24/25262300rewritten
138.36.168.x/24/24262300rewritten
138.36.169.x/24/23262300rewritten
138.36.170.x/24/22262300rewritten
138.36.172.x/24/21263554rewritten
138.36.160.x/24/2052610rewritten
138.36.184.x/24/1952968rewritten
138.36.136.x/24/18263829rewritten
138.36.232.x/24/1761696rewritten
138.36.40.x/24/16264570rewritten
138.37.168.x/24/15198864rewritten
138.38.168.x/24/14786rewritten
138.32.168.x/24/1318701rewritten
138.44.168.x/24/127575rewritten
138.52.168.x/24/11UNROUTEDrewritten
138.4.168.x/24/10766rewritten
138.100.168.x/24/9766rewritten
138.164.168.x/24/8721rewritten

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::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::1592001:610:510:115:192:42:115:98yes
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: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
2804:788:3xx::/40/120262300yes
2804:788:3xx::/40/112262300yes
2804:788:3xx::/40/104262300yes
2804:788:3xx::/40/96262300yes
2804:788:3xx::/40/88262300yes
2804:788:3xx::/40/80262300yes
2804:788:3xx::/40/72262300yes
2804:788:3xx::/40/64262300yes
2804:788:3xx::/40/56262300yes
2804:788:3xx::/40/48262300yes
2804:788:3xx::/40/40262300yes
2804:788:83xx::/40/32262300yes
2804:708:3xx::/40/24UNROUTEDyes
2804:8788:3xx::/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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