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Session Report

Summary:
Test run at: 2021-02-12 06:52:22 GMT
Client Prefix (v4): 61.45.203.x/24
Client AS (v4): 9600 (SONYTELECOM)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none

Meaning of result status in column:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
61.45.203.x/24/319600rewritten
61.45.203.x/24/309600rewritten
61.45.203.x/24/299600rewritten
61.45.203.x/24/289600rewritten
61.45.203.x/24/279600rewritten
61.45.203.x/24/269600rewritten
61.45.203.x/24/259600rewritten
61.45.203.x/24/249600rewritten
61.45.202.x/24/239600rewritten
61.45.201.x/24/229600rewritten
61.45.207.x/24/219600rewritten
61.45.195.x/24/209600rewritten
61.45.219.x/24/199600rewritten
61.45.235.x/24/18UNROUTEDrewritten
61.45.139.x/24/17UNROUTEDrewritten
61.45.75.x/24/169595rewritten
61.44.203.x/24/15UNROUTEDrewritten
61.47.203.x/24/1417597rewritten
61.41.203.x/24/133786rewritten
61.37.203.x/24/123786rewritten
61.61.203.x/24/11UNROUTEDrewritten
61.13.203.x/24/10UNROUTEDrewritten
61.109.203.x/24/99848rewritten
61.173.203.x/24/84812rewritten

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 6 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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