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Session Report

Summary:
Test run at: 2023-07-19 16:26:27 GMT
Client Prefix (v4): 192.140.89.x/24
Client AS (v4): 266260
IPv4 Probes: 60
Client Prefix (v6): 2804:3d34:50xx::/40
Client AS (v6): 266260
IPv6 Probes: 52
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
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 (192.140.89.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
192.140.89.x/24/31266260rewritten
192.140.89.x/24/30266260rewritten
192.140.89.x/24/29266260rewritten
192.140.89.x/24/28266260rewritten
192.140.89.x/24/27266260rewritten
192.140.89.x/24/26266260rewritten
192.140.89.x/24/25266260rewritten
192.140.89.x/24/24266260rewritten
192.140.88.x/24/23266260rewritten
192.140.91.x/24/22266260rewritten
192.140.93.x/24/21265711rewritten
192.140.81.x/24/20266239rewritten
192.140.73.x/24/1952974rewritten
192.140.121.x/24/18266252rewritten
192.140.25.x/24/17266222rewritten
192.140.217.x/24/16UNROUTEDrewritten
192.141.89.x/24/15267459rewritten
192.142.89.x/24/14UNROUTEDrewritten
192.136.89.x/24/13UNROUTEDrewritten
192.132.89.x/24/12UNROUTEDrewritten
192.156.89.x/24/11749rewritten
192.172.89.x/24/10749rewritten
192.204.89.x/24/92914rewritten
192.12.89.x/24/85719rewritten

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::1592001:40b0:7500:280::5458:517ano
2001:4978:1fb:6400::d22001:40b0:7500:280::5458:517ano
2001:49aa:111:aa00::112001:40b0:7500:280::5458:517ano
fd11:1111:1111::11112001:40b0:7500:280::5458:517ano
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
2804:3d34:50xx::/40/120266260yes
2804:3d34:50xx::/40/112266260yes
2804:3d34:50xx::/40/104266260yes
2804:3d34:50xx::/40/96266260yes
2804:3d34:50xx::/40/88266260yes
2804:3d34:50xx::/40/80266260yes
2804:3d34:50xx::/40/72266260yes
2804:3d34:50xx::/40/64266260yes
2804:3d34:50xx::/40/56266260yes
2804:3d34:50xx::/40/48266260no
2804:3d34:50xx::/40/40266260no
2804:3d34:d0xx::/40/32266260no
2804:3db4:50xx::/40/24UNROUTEDno
2804:bd34:50xx::/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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