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Session Report

Summary:
Test run at: 2017-06-01 21:23:11 GMT
Client Prefix (v4): 190.97.255.x/24
Client AS (v4): 263703
IPv4 Probes: 118
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable blocked
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 (190.97.255.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
190.97.255.x/24/31263703natblock
190.97.255.x/24/30263703natblock
190.97.255.x/24/29263703natblock
190.97.255.x/24/28263703natblock
190.97.255.x/24/27263703natblock
190.97.255.x/24/26263703natblock
190.97.255.x/24/25263703natblock
190.97.255.x/24/24263703natblock
190.97.254.x/24/23263703natblock
190.97.253.x/24/22263703natblock
190.97.251.x/24/21263703natblock
190.97.247.x/24/20263703natblock
190.97.239.x/24/19263703natblock
190.97.223.x/24/1827845natblock
190.97.191.x/24/1727923natblock
190.97.127.x/24/1652387natblock
190.96.255.x/24/1522368natblock
190.99.255.x/24/1410299natblock
190.101.255.x/24/1322047natblock
190.105.255.x/24/1252278natblock
190.113.255.x/24/11262241natblock
190.65.255.x/24/103816natblock
190.33.255.x/24/911556natblock
190.225.255.x/24/8UNROUTEDnatblock

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.

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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