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Session Report

Summary:
Test run at: 2021-11-19 22:51:43 GMT
Client Prefix (v4): 131.196.198.x/24
Client AS (v4): 265919
IPv4 Probes: 66
Client Prefix (v6): 2804:3fd8:80xx::/40
Client AS (v6): 265919
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length /24/64
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.
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 (131.196.198.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.196.198.x/24/31265919yes
131.196.198.x/24/30265919yes
131.196.198.x/24/29265919yes
131.196.198.x/24/28265919yes
131.196.198.x/24/27265919yes
131.196.198.x/24/26265919yes
131.196.198.x/24/25265919yes
131.196.198.x/24/24265919yes
131.196.199.x/24/23265919no
131.196.196.x/24/22265919no
131.196.194.x/24/21265759no
131.196.206.x/24/20265920no
131.196.214.x/24/19265696no
131.196.230.x/24/18265944no
131.196.134.x/24/17265928no
131.196.70.x/24/16265910no
131.197.198.x/24/15UNROUTEDno
131.198.198.x/24/141341no
131.192.198.x/24/13UNROUTEDno
131.204.198.x/24/126112no
131.212.198.x/24/11217no
131.228.198.x/24/101248no
131.132.198.x/24/974no
131.68.198.x/24/8138no

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)

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::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
2804:3fd8:80xx::/40/120265919yes
2804:3fd8:80xx::/40/112265919yes
2804:3fd8:80xx::/40/104265919yes
2804:3fd8:80xx::/40/96265919yes
2804:3fd8:80xx::/40/88265919yes
2804:3fd8:80xx::/40/80265919yes
2804:3fd8:80xx::/40/72265919yes
2804:3fd8:80xx::/40/64265919yes
2804:3fd8:80xx::/40/56265919no
2804:3fd8:80xx::/40/48265919no
2804:3fd8:80xx::/40/40265919no
2804:3fd8:xx::/40/32265919no
2804:3f58:80xx::/40/24265886no
2804:bfd8:80xx::/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.
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