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Session Report

Summary:
Test run at: 2022-08-05 14:13:52 GMT
Client Prefix (v4): 143.137.68.x/24
Client AS (v4): 262369
IPv4 Probes: 60
Client Prefix (v6): 2804:86c:20xx::/40
Client AS (v6): 262369
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedunknown
Routable blockedunknown
Largest spoofable neighbor prefix length nonenone
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 (143.137.68.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
143.137.68.x/24/31262369natblock
143.137.68.x/24/30262369natblock
143.137.68.x/24/29262369natblock
143.137.68.x/24/28262369natblock
143.137.68.x/24/27262369natblock
143.137.68.x/24/26262369natblock
143.137.68.x/24/25262369natblock
143.137.68.x/24/24262369natblock
143.137.69.x/24/23262369natblock
143.137.70.x/24/22262369natblock
143.137.64.x/24/21263530natblock
143.137.76.x/24/20263668natblock
143.137.84.x/24/19262847natblock
143.137.100.x/24/1852914natblock
143.137.4.x/24/1761636natblock
143.137.196.x/24/1661902natblock
143.136.68.x/24/15UNROUTEDnatblock
143.139.68.x/24/14721natblock
143.141.68.x/24/13721natblock
143.129.68.x/24/122611natblock
143.153.68.x/24/11749natblock
143.169.68.x/24/102611natblock
143.201.68.x/24/9UNROUTEDnatblock
143.9.68.x/24/8UNROUTEDnatblock

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 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 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:86c:20xx::/40/120262369no
2804:86c:20xx::/40/112262369no
2804:86c:20xx::/40/104262369no
2804:86c:20xx::/40/96262369no
2804:86c:20xx::/40/88262369no
2804:86c:20xx::/40/80262369no
2804:86c:20xx::/40/72262369no
2804:86c:20xx::/40/64262369no
2804:86c:20xx::/40/56262369no
2804:86c:20xx::/40/48262369no
2804:86c:20xx::/40/40262369no
2804:86c:a0xx::/40/32262369no
2804:8ec:20xx::/40/24UNROUTEDno
2804:886c:20xx::/40/16UNROUTEDno

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
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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