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Session Report

Summary:
Test run at: 2021-03-10 11:51:41 GMT
Client Prefix (v4): 138.186.57.x/24
Client AS (v4): 264066
IPv4 Probes: 69
Client Prefix (v6): 2804:2a3c:xx::/40
Client AS (v6): 264066
IPv6 Probes: 60
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 (138.186.57.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.186.57.x/24/31264066rewritten
138.186.57.x/24/30264066rewritten
138.186.57.x/24/29264066rewritten
138.186.57.x/24/28264066rewritten
138.186.57.x/24/27264066rewritten
138.186.57.x/24/26264066rewritten
138.186.57.x/24/25264066rewritten
138.186.57.x/24/24264066rewritten
138.186.56.x/24/23264066rewritten
138.186.59.x/24/22264066rewritten
138.186.61.x/24/2128103rewritten
138.186.49.x/24/20263858rewritten
138.186.41.x/24/19263852rewritten
138.186.25.x/24/18263861rewritten
138.186.121.x/24/17264681rewritten
138.186.185.x/24/1661784rewritten
138.187.57.x/24/15UNROUTEDrewritten
138.184.57.x/24/14UNROUTEDrewritten
138.190.57.x/24/133303rewritten
138.178.57.x/24/12721rewritten
138.170.57.x/24/11721rewritten
138.154.57.x/24/10721rewritten
138.250.57.x/24/9786rewritten
138.58.57.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::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: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
2804:2a3c:xx::/40/120264066yes
2804:2a3c:xx::/40/112264066yes
2804:2a3c:xx::/40/104264066yes
2804:2a3c:xx::/40/96264066yes
2804:2a3c:xx::/40/88264066yes
2804:2a3c:xx::/40/80264066yes
2804:2a3c:xx::/40/72264066yes
2804:2a3c:xx::/40/64264066yes
2804:2a3c:xx::/40/56264066yes
2804:2a3c:xx::/40/48264066yes
2804:2a3c:xx::/40/40264066yes
2804:2a3c:80xx::/40/32264066yes
2804:2abc:xx::/40/24264091yes
2804:aa3c:xx::/40/16UNROUTEDyes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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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