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Session Report

Summary:
Test run at: 2017-10-14 09:23:18 GMT
Client Prefix (v4): 202.136.90.x/24
Client AS (v4): 134371 (CIRCLENETWORK-BD)
IPv4 Probes: 105
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 (202.136.90.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
202.136.90.x/24/30134371rewritten
202.136.90.x/24/29134371rewritten
202.136.90.x/24/28134371rewritten
202.136.90.x/24/27134371rewritten
202.136.90.x/24/26134371rewritten
202.136.90.x/24/25134371rewritten
202.136.90.x/24/24134371rewritten
202.136.91.x/24/23134371rewritten
202.136.88.x/24/22134371rewritten
202.136.94.x/24/21135025rewritten
202.136.82.x/24/209829rewritten
202.136.74.x/24/199829rewritten
202.136.122.x/24/189712rewritten
202.136.26.x/24/17134078rewritten
202.136.218.x/24/1624141rewritten
202.137.90.x/24/157637rewritten
202.138.90.x/24/14UNROUTEDrewritten
202.140.90.x/24/139474rewritten
202.128.90.x/24/123605rewritten
202.152.90.x/24/1110101rewritten
202.168.90.x/24/1045655rewritten
202.200.90.x/24/94538rewritten
202.8.90.x/24/817630rewritten

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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