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Session Report

Summary:
Test run at: 2019-05-24 16:06:08 GMT
Client Prefix (v4): 200.56.193.x/24
Client AS (v4): 16960
IPv4 Probes: 93
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable received
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 (200.56.193.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.56.193.x/24/3116960rewritten
200.56.193.x/24/3016960rewritten
200.56.193.x/24/2916960rewritten
200.56.193.x/24/2816960rewritten
200.56.193.x/24/2716960rewritten
200.56.193.x/24/2616960rewritten
200.56.193.x/24/2516960rewritten
200.56.193.x/24/2416960rewritten
200.56.192.x/24/2316960rewritten
200.56.195.x/24/2216960rewritten
200.56.197.x/24/2116960rewritten
200.56.201.x/24/2016960rewritten
200.56.209.x/24/1916960rewritten
200.56.225.x/24/1819332rewritten
200.56.129.x/24/1713999rewritten
200.56.65.x/24/166503rewritten
200.57.193.x/24/156503rewritten
200.58.193.x/24/1413489rewritten
200.60.193.x/24/136147rewritten
200.48.193.x/24/126147rewritten
200.40.193.x/24/116057rewritten
200.24.193.x/24/1019114rewritten
200.120.193.x/24/922047rewritten
200.184.193.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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