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Session Report

Summary:
Test run at: 2019-08-15 07:11:21 GMT
Client Prefix (v4): 136.228.129.x/24
Client AS (v4): 131207 (SINET-KH)
IPv4 Probes: 96
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (136.228.129.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
136.228.129.x/24/31131207rewritten
136.228.129.x/24/30131207rewritten
136.228.129.x/24/29131207rewritten
136.228.129.x/24/28131207rewritten
136.228.129.x/24/27131207rewritten
136.228.129.x/24/26131207rewritten
136.228.129.x/24/25131207rewritten
136.228.129.x/24/24131207rewritten
136.228.128.x/24/23131207rewritten
136.228.131.x/24/22131207rewritten
136.228.133.x/24/21UNROUTEDrewritten
136.228.137.x/24/20UNROUTEDrewritten
136.228.145.x/24/19UNROUTEDrewritten
136.228.161.x/24/189988rewritten
136.228.193.x/24/17396253rewritten
136.228.1.x/24/16396259rewritten
136.229.129.x/24/157792rewritten
136.230.129.x/24/14UNROUTEDrewritten
136.224.129.x/24/1322174rewritten
136.236.129.x/24/12UNROUTEDrewritten
136.244.129.x/24/113606rewritten
136.196.129.x/24/10UNROUTEDrewritten
136.164.129.x/24/942175rewritten
136.100.129.x/24/8UNROUTEDrewritten

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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