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Session Report

Summary:
Test run at: 2022-11-27 22:28:09 GMT
Client Prefix (v4): 198.140.141.x/24
Client AS (v4): 56655 (TERRAHOST)
IPv4 Probes: 60
Client Prefix (v6): 2a03:94e3:ffxx::/40
Client AS (v6): 56655 (TERRAHOST)
IPv6 Probes: 52
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 /24/120
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 (198.140.141.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
198.140.141.x/24/3156655yes
198.140.141.x/24/3056655yes
198.140.141.x/24/2956655yes
198.140.141.x/24/2856655yes
198.140.141.x/24/2756655yes
198.140.141.x/24/2656655yes
198.140.141.x/24/2556655yes
198.140.141.x/24/2456655yes
198.140.140.x/24/23UNROUTEDno
198.140.143.x/24/22UNROUTEDno
198.140.137.x/24/21UNROUTEDno
198.140.133.x/24/20UNROUTEDno
198.140.157.x/24/19UNROUTEDno
198.140.173.x/24/18UNROUTEDno
198.140.205.x/24/17UNROUTEDno
198.140.13.x/24/163379no
198.141.141.x/24/15UNROUTEDno
198.142.141.x/24/144804no
198.136.141.x/24/13UNROUTEDno
198.132.141.x/24/12UNROUTEDno
198.156.141.x/24/11UNROUTEDno
198.172.141.x/24/102914no
198.204.141.x/24/911313no
198.12.141.x/24/8398101no

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 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::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
2a03:94e3:ffxx::/40/12056655yes
2a03:94e3:ffxx::/40/11256655no
2a03:94e3:ffxx::/40/10456655no
2a03:94e3:ffxx::/40/9656655no
2a03:94e3:ffxx::/40/8856655no
2a03:94e3:ffxx::/40/8056655no
2a03:94e3:ffxx::/40/7256655no
2a03:94e3:ffxx::/40/6456655no
2a03:94e3:ffxx::/40/5656655no
2a03:94e3:ffxx::/40/4856655no
2a03:94e3:ffxx::/40/4056655no
2a03:94e3:7fxx::/40/3256655no
2a03:9463:ffxx::/40/24UNROUTEDno
2a03:14e3:ffxx::/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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