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Session Report

Summary:
Test run at: 2017-07-22 09:15:09 GMT
Client Prefix (v4): 86.187.164.x/24
Client AS (v4): 2856 (BT-UK-AS)
IPv4 Probes: 132
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (86.187.164.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
86.187.164.x/24/312856natblock
86.187.164.x/24/302856natblock
86.187.164.x/24/292856natblock
86.187.164.x/24/282856natblock
86.187.164.x/24/272856natblock
86.187.164.x/24/262856natblock
86.187.164.x/24/252856natblock
86.187.164.x/24/242856natblock
86.187.165.x/24/232856natblock
86.187.166.x/24/222856natblock
86.187.160.x/24/212856natblock
86.187.172.x/24/202856natblock
86.187.180.x/24/192856natblock
86.187.132.x/24/182856natblock
86.187.228.x/24/172856natblock
86.187.36.x/24/162856natblock
86.186.164.x/24/152856natblock
86.185.164.x/24/142856natblock
86.191.164.x/24/132856natblock
86.179.164.x/24/122856natblock
86.171.164.x/24/112856natblock
86.155.164.x/24/102856natblock
86.251.164.x/24/9UNROUTEDnatblock
86.59.164.x/24/85483natblock

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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