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Session Report

Summary:
Test run at: 2021-11-02 15:16:32 GMT
Client Prefix (v4): 189.203.192.x/24
Client AS (v4): 17072
IPv4 Probes: 66
Client Prefix (v6): 2806:2f0:51xx::/40
Client AS (v6): 17072
IPv6 Probes: 56
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 (189.203.192.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
189.203.192.x/24/3117072natblock
189.203.192.x/24/3017072natblock
189.203.192.x/24/2917072natblock
189.203.192.x/24/2817072natblock
189.203.192.x/24/2717072natblock
189.203.192.x/24/2617072natblock
189.203.192.x/24/2517072natblock
189.203.192.x/24/2417072natblock
189.203.193.x/24/2317072natblock
189.203.194.x/24/2222884natblock
189.203.196.x/24/2122884natblock
189.203.200.x/24/2017072natblock
189.203.208.x/24/1922884natblock
189.203.224.x/24/1822884natblock
189.203.128.x/24/1722884natblock
189.203.64.x/24/1622884natblock
189.202.192.x/24/1518734natblock
189.201.192.x/24/14262944natblock
189.207.192.x/24/136503natblock
189.195.192.x/24/1213999natblock
189.219.192.x/24/11265594natblock
189.235.192.x/24/108151natblock
189.139.192.x/24/98151natblock
189.75.192.x/24/88167natblock

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
2806:2f0:51xx::/40/12017072no
2806:2f0:51xx::/40/11217072no
2806:2f0:51xx::/40/10417072no
2806:2f0:51xx::/40/9617072no
2806:2f0:51xx::/40/8817072no
2806:2f0:51xx::/40/8017072no
2806:2f0:51xx::/40/7217072no
2806:2f0:51xx::/40/6417072no
2806:2f0:51xx::/40/5617072no
2806:2f0:51xx::/40/4817072no
2806:2f0:51xx::/40/4017072no
2806:2f0:d1xx::/40/3217072no
2806:270:51xx::/40/2419373no
2806:82f0:51xx::/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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