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Session Report

Summary:
Test run at: 2022-10-06 18:51:19 GMT
Client Prefix (v4): 190.83.116.x/24
Client AS (v4): 269940
IPv4 Probes: 60
Client Prefix (v6): 2803:9ae0:2xx::/40
Client AS (v6): 269940
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable receivedreceived
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 (190.83.116.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
190.83.116.x/24/31269940rewritten
190.83.116.x/24/30269940rewritten
190.83.116.x/24/29269940rewritten
190.83.116.x/24/28269940rewritten
190.83.116.x/24/27269940rewritten
190.83.116.x/24/26269940rewritten
190.83.116.x/24/25269940rewritten
190.83.116.x/24/24269940rewritten
190.83.117.x/24/23269940rewritten
190.83.118.x/24/22UNROUTEDrewritten
190.83.112.x/24/21269930rewritten
190.83.124.x/24/20269949rewritten
190.83.100.x/24/19270342rewritten
190.83.84.x/24/18270340rewritten
190.83.52.x/24/17270349rewritten
190.83.244.x/24/1627665rewritten
190.82.116.x/24/1515311rewritten
190.81.116.x/24/1412252rewritten
190.87.116.x/24/1314754rewritten
190.91.116.x/24/1227925rewritten
190.67.116.x/24/113816rewritten
190.115.116.x/24/1028038rewritten
190.19.116.x/24/97303rewritten
190.211.116.x/24/8262145rewritten

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 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::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::242no
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::247no
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:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2803:9ae0:2xx::/40/120269940yes
2803:9ae0:2xx::/40/112269940yes
2803:9ae0:2xx::/40/104269940yes
2803:9ae0:2xx::/40/96269940yes
2803:9ae0:2xx::/40/88269940yes
2803:9ae0:2xx::/40/80269940yes
2803:9ae0:2xx::/40/72269940yes
2803:9ae0:2xx::/40/64269940yes
2803:9ae0:2xx::/40/56269940yes
2803:9ae0:2xx::/40/48269940yes
2803:9ae0:2xx::/40/40269940yes
2803:9ae0:82xx::/40/32269940yes
2803:9a60:2xx::/40/24UNROUTEDyes
2803:1ae0:2xx::/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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