Logo

Session Report

Summary:
Test run at: 2021-11-18 04:31:19 GMT
Client Prefix (v4): 138.94.201.x/24
Client AS (v4): 264169
IPv4 Probes: 66
Client Prefix (v6): 2804:238c:1xx::/40
Client AS (v6): 264169
IPv6 Probes: 56
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/56

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.94.201.x/24/31264169rewritten
138.94.201.x/24/30264169rewritten
138.94.201.x/24/29264169rewritten
138.94.201.x/24/28264169rewritten
138.94.201.x/24/27264169rewritten
138.94.201.x/24/26264169rewritten
138.94.201.x/24/25264169rewritten
138.94.201.x/24/24264169rewritten
138.94.200.x/24/23264169rewritten
138.94.203.x/24/22264169rewritten
138.94.205.x/24/21262766rewritten
138.94.193.x/24/20264186rewritten
138.94.217.x/24/19263744rewritten
138.94.233.x/24/18262887rewritten
138.94.137.x/24/17264172rewritten
138.94.73.x/24/16262848rewritten
138.95.201.x/24/15UNROUTEDrewritten
138.92.201.x/24/1411482rewritten
138.90.201.x/24/13UNROUTEDrewritten
138.86.201.x/24/1215295rewritten
138.78.201.x/24/11396087rewritten
138.126.201.x/24/10UNROUTEDrewritten
138.30.201.x/24/9UNROUTEDrewritten
138.222.201.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 2 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
2804:238c:1xx::/40/120264169yes
2804:238c:1xx::/40/112264169yes
2804:238c:1xx::/40/104264169yes
2804:238c:1xx::/40/96264169yes
2804:238c:1xx::/40/88264169yes
2804:238c:1xx::/40/80264169yes
2804:238c:1xx::/40/72264169yes
2804:238c:1xx::/40/64264169yes
2804:238c:1xx::/40/56264169yes
2804:238c:1xx::/40/48264169no
2804:238c:1xx::/40/40264169no
2804:238c:81xx::/40/32UNROUTEDno
2804:230c:1xx::/40/24264139no
2804:a38c:1xx::/40/16UNROUTEDno

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.
Last Modified