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Session Report

Summary:
Test run at: 2022-08-01 20:29:09 GMT
Client Prefix (v4): 143.202.100.x/24
Client AS (v4): 263152
IPv4 Probes: 60
Client Prefix (v6): 2804:1784:ffxx::/40
Client AS (v6): 263152
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownblocked
Routable unknownblocked
Largest spoofable neighbor prefix length none/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 (143.202.100.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
143.202.100.x/24/31263152natblock
143.202.100.x/24/30263152natblock
143.202.100.x/24/29263152natblock
143.202.100.x/24/28263152natblock
143.202.100.x/24/27263152natblock
143.202.100.x/24/26263152natblock
143.202.100.x/24/25263152natblock
143.202.100.x/24/24263152natblock
143.202.101.x/24/23263152natblock
143.202.102.x/24/22263152natblock
143.202.96.x/24/21264619natblock
143.202.108.x/24/20262605natblock
143.202.116.x/24/19263587natblock
143.202.68.x/24/18262819natblock
143.202.36.x/24/17264056natblock
143.202.228.x/24/16264589natblock
143.203.100.x/24/15UNROUTEDnatblock
143.200.100.x/24/143128natblock
143.206.100.x/24/1340503natblock
143.194.100.x/24/121541natblock
143.218.100.x/24/11UNROUTEDnatblock
143.234.100.x/24/10786natblock
143.138.100.x/24/9747natblock
143.74.100.x/24/8721natblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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
2804:1784:ffxx::/40/120263152yes
2804:1784:ffxx::/40/112263152yes
2804:1784:ffxx::/40/104263152yes
2804:1784:ffxx::/40/96263152yes
2804:1784:ffxx::/40/88263152yes
2804:1784:ffxx::/40/80263152yes
2804:1784:ffxx::/40/72263152yes
2804:1784:ffxx::/40/64263152yes
2804:1784:ffxx::/40/56263152no
2804:1784:ffxx::/40/48263152no
2804:1784:ffxx::/40/40263152no
2804:1784:7fxx::/40/32263152no
2804:1704:ffxx::/40/24263116no
2804:9784: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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