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Session Report

Summary:
Test run at: 2020-01-27 00:32:30 GMT
Client Prefix (v4): 167.249.169.x/24
Client AS (v4): 262503
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 (167.249.169.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
167.249.169.x/24/31262503rewritten
167.249.169.x/24/30262503rewritten
167.249.169.x/24/29262503rewritten
167.249.169.x/24/28262503rewritten
167.249.169.x/24/27262503rewritten
167.249.169.x/24/26262503rewritten
167.249.169.x/24/25262503rewritten
167.249.169.x/24/24262503rewritten
167.249.168.x/24/23262503rewritten
167.249.171.x/24/22262503rewritten
167.249.173.x/24/21265182rewritten
167.249.161.x/24/20265184rewritten
167.249.185.x/24/1953066rewritten
167.249.137.x/24/18265186rewritten
167.249.233.x/24/1725933rewritten
167.249.41.x/24/1627817rewritten
167.248.169.x/24/15209rewritten
167.251.169.x/24/1414946rewritten
167.253.169.x/24/136181rewritten
167.241.169.x/24/12UNROUTEDrewritten
167.233.169.x/24/1124940rewritten
167.217.169.x/24/106461rewritten
167.185.169.x/24/9UNROUTEDrewritten
167.121.169.x/24/810662rewritten

Meaning of status in Received column:

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 able to spoof routable, non-adjacent source addresses through the first 10 IP hop(s).
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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