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Session Report

Summary:
Test run at: 2017-08-08 07:38:55 GMT
Client Prefix (v4): 123.136.107.x/24
Client AS (v4): 38466 (UMOBILE-AS-AP)
IPv4 Probes: 121
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 (123.136.107.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
123.136.107.x/24/3138466rewritten
123.136.107.x/24/3038466rewritten
123.136.107.x/24/2938466rewritten
123.136.107.x/24/2838466rewritten
123.136.107.x/24/2738466rewritten
123.136.107.x/24/2638466rewritten
123.136.107.x/24/2538466rewritten
123.136.107.x/24/2438466rewritten
123.136.106.x/24/2338466rewritten
123.136.105.x/24/2238466rewritten
123.136.111.x/24/2138466rewritten
123.136.99.x/24/2038466rewritten
123.136.123.x/24/1938466rewritten
123.136.75.x/24/1838471rewritten
123.136.43.x/24/177600rewritten
123.136.235.x/24/1645528rewritten
123.137.107.x/24/154134rewritten
123.138.107.x/24/144837rewritten
123.140.107.x/24/133786rewritten
123.128.107.x/24/124837rewritten
123.152.107.x/24/114837rewritten
123.168.107.x/24/1017633rewritten
123.200.107.x/24/938121rewritten
123.8.107.x/24/84837rewritten

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 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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