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Session Report

Summary:
Test run at: 2019-07-26 15:08:46 GMT
Client Prefix (v4): 186.235.184.x/24
Client AS (v4): 61888
IPv4 Probes: 99
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 (186.235.184.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.235.184.x/24/3161888natblock
186.235.184.x/24/3061888natblock
186.235.184.x/24/2961888rewritten
186.235.184.x/24/2861888rewritten
186.235.184.x/24/2761888rewritten
186.235.184.x/24/2661888rewritten
186.235.184.x/24/2561888rewritten
186.235.184.x/24/2461888rewritten
186.235.185.x/24/2361888rewritten
186.235.186.x/24/2261888rewritten
186.235.188.x/24/2161888rewritten
186.235.176.x/24/2028139rewritten
186.235.168.x/24/19262784rewritten
186.235.152.x/24/1853202rewritten
186.235.248.x/24/17262953rewritten
186.235.56.x/24/1653001rewritten
186.234.184.x/24/157162rewritten
186.233.184.x/24/14262287rewritten
186.239.184.x/24/1310429rewritten
186.227.184.x/24/12262975rewritten
186.251.184.x/24/11263003rewritten
186.203.184.x/24/1017379rewritten
186.171.184.x/24/9UNROUTEDrewritten
186.107.184.x/24/87418rewritten

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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 1 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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