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Session Report

Summary:
Test run at: 2023-10-17 19:01:18 GMT
Client Prefix (v4): 104.157.75.x/24
Client AS (v4): 852 (ASN852)
IPv4 Probes: 69
Client Prefix (v6): 2605:fd00:xx::/40
Client AS (v6): 15296 (CYBERA)
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
104.157.75.x/24/31852sendto
104.157.75.x/24/30852sendto
104.157.75.x/24/29852sendto
104.157.75.x/24/28852sendto
104.157.75.x/24/27852sendto
104.157.75.x/24/26852natblock
104.157.75.x/24/25852sendto
104.157.75.x/24/24852sendto
104.157.74.x/24/23852sendto
104.157.73.x/24/22852sendto
104.157.79.x/24/21852sendto
104.157.67.x/24/20852sendto
104.157.91.x/24/19852sendto
104.157.107.x/24/18852sendto
104.157.11.x/24/17852sendto
104.157.203.x/24/1636493sendto
104.156.75.x/24/1522652sendto
104.159.75.x/24/14UNROUTEDsendto
104.153.75.x/24/13UNROUTEDsendto
104.149.75.x/24/1240676sendto
104.141.75.x/24/1132440sendto
104.189.75.x/24/107018sendto
104.221.75.x/24/95769sendto
104.29.75.x/24/813335sendto

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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
2605:fd00:xx::/40/12015296sendto
2605:fd00:xx::/40/11215296sendto
2605:fd00:xx::/40/10415296sendto
2605:fd00:xx::/40/9615296sendto
2605:fd00:xx::/40/8815296sendto
2605:fd00:xx::/40/8015296sendto
2605:fd00:xx::/40/7215296sendto
2605:fd00:xx::/40/6415296sendto
2605:fd00:xx::/40/5615296sendto
2605:fd00:xx::/40/4815296sendto
2605:fd00:xx::/40/4015296sendto
2605:fd00:80xx::/40/3215296sendto
2605:fd80:xx::/40/24UNROUTEDsendto
2605:7d00:xx::/40/16UNROUTEDsendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.
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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