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Session Report

Summary:
Test run at: 2019-11-14 01:41:37 GMT
Client Prefix (v4): 45.165.163.x/24
Client AS (v4): 267961
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
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 (45.165.163.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.165.163.x/24/31267961natblock
45.165.163.x/24/30267961rewritten
45.165.163.x/24/29267961rewritten
45.165.163.x/24/28267961rewritten
45.165.163.x/24/27267961rewritten
45.165.163.x/24/26267961natblock
45.165.163.x/24/25267961rewritten
45.165.163.x/24/24267961rewritten
45.165.162.x/24/23267961rewritten
45.165.161.x/24/22267961rewritten
45.165.167.x/24/21268683rewritten
45.165.171.x/24/20265703rewritten
45.165.179.x/24/19263067rewritten
45.165.131.x/24/18262899natblock
45.165.227.x/24/17262405natblock
45.165.35.x/24/16268656rewritten
45.164.163.x/24/15268626rewritten
45.167.163.x/24/14268041rewritten
45.161.163.x/24/13268466rewritten
45.173.163.x/24/12268830rewritten
45.181.163.x/24/11269228rewritten
45.133.163.x/24/10UNROUTEDnatblock
45.229.163.x/24/9267129rewritten
45.37.163.x/24/811426natblock

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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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