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Session Report

Summary:
Test run at: 2021-09-08 18:25:40 GMT
Client Prefix (v4): 172.93.16.x/24
Client AS (v4): 1403 (EBOX)
IPv4 Probes: 66
Client Prefix (v6): 2606:6d00:exx::/40
Client AS (v6): 1403 (EBOX)
IPv6 Probes: 56
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 nonenone

Meaning of result status in column:

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 (172.93.16.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
172.93.16.x/24/311403natblock
172.93.16.x/24/301403natblock
172.93.16.x/24/291403natblock
172.93.16.x/24/281403natblock
172.93.16.x/24/271403natblock
172.93.16.x/24/261403natblock
172.93.16.x/24/251403natblock
172.93.16.x/24/241403natblock
172.93.17.x/24/231403natblock
172.93.18.x/24/221403natblock
172.93.20.x/24/211403natblock
172.93.24.x/24/201403natblock
172.93.0.x/24/1953340natblock
172.93.48.x/24/1829802natblock
172.93.80.x/24/17174natblock
172.93.144.x/24/1620278natblock
172.92.16.x/24/1554858natblock
172.95.16.x/24/145650natblock
172.89.16.x/24/1320001natblock
172.85.16.x/24/1211776natblock
172.77.16.x/24/115650natblock
172.125.16.x/24/107018natblock
172.29.16.x/24/9UNROUTEDnatblock
172.221.16.x/24/820115natblock

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 probes:
Spoofed source addressDestinationReceived
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2606:6d00:exx::/40/1201403natblock
2606:6d00:exx::/40/1121403natblock
2606:6d00:exx::/40/1041403natblock
2606:6d00:exx::/40/961403natblock
2606:6d00:exx::/40/881403natblock
2606:6d00:exx::/40/801403natblock
2606:6d00:exx::/40/721403natblock
2606:6d00:exx::/40/641403natblock
2606:6d00:exx::/40/561403natblock
2606:6d00:exx::/40/481403natblock
2606:6d00:exx::/40/401403natblock
2606:6d00:8exx::/40/321403natblock
2606:6d80:exx::/40/24UNROUTEDnatblock
2606:ed00:exx::/40/1647869natblock

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.
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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