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Session Report

Summary:
Test run at: 2019-03-03 02:20:38 GMT
Client Prefix (v4): 200.142.185.x/24
Client AS (v4): 53049
IPv4 Probes: 116
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 (200.142.185.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.142.185.x/24/3153049rewritten
200.142.185.x/24/3053049rewritten
200.142.185.x/24/2953049rewritten
200.142.185.x/24/2853049rewritten
200.142.185.x/24/2753049rewritten
200.142.185.x/24/2653049rewritten
200.142.185.x/24/2553049rewritten
200.142.185.x/24/2453049rewritten
200.142.184.x/24/2353049rewritten
200.142.187.x/24/2253049rewritten
200.142.189.x/24/2161950rewritten
200.142.177.x/24/2061949rewritten
200.142.169.x/24/1926104rewritten
200.142.153.x/24/1828591rewritten
200.142.249.x/24/1714204rewritten
200.142.57.x/24/1626118rewritten
200.143.185.x/24/1516397rewritten
200.140.185.x/24/148167rewritten
200.138.185.x/24/138167rewritten
200.134.185.x/24/1210881rewritten
200.158.185.x/24/1127699rewritten
200.174.185.x/24/104230rewritten
200.206.185.x/24/927699rewritten
200.14.185.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 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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