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Session Report

Summary:
Test run at: 2021-08-20 19:52:41 GMT
Client Prefix (v4): 192.141.255.x/24
Client AS (v4): 267503
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length none
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 (192.141.255.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
192.141.255.x/24/31267503natblock
192.141.255.x/24/30267503natblock
192.141.255.x/24/29267503natblock
192.141.255.x/24/28267503natblock
192.141.255.x/24/27267503natblock
192.141.255.x/24/26267503natblock
192.141.255.x/24/25267503natblock
192.141.255.x/24/24267503natblock
192.141.254.x/24/23267503natblock
192.141.253.x/24/22267503natblock
192.141.251.x/24/21267498natblock
192.141.247.x/24/20265540natblock
192.141.239.x/24/19267483natblock
192.141.223.x/24/18267480natblock
192.141.191.x/24/17267494natblock
192.141.127.x/24/16265524natblock
192.140.255.x/24/15135310natblock
192.143.255.x/24/1437611natblock
192.137.255.x/24/13UNROUTEDnatblock
192.133.255.x/24/1230549natblock
192.157.255.x/24/1112479natblock
192.173.255.x/24/103663natblock
192.205.255.x/24/9UNROUTEDnatblock
192.13.255.x/24/88003natblock

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.
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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