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Session Report

Summary:
Test run at: 2017-06-15 07:49:11 GMT
Client Prefix (v4): 195.162.85.x/24
Client AS (v4): 15405 (EASTCORK-AS)
IPv4 Probes: 131
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 (195.162.85.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
195.162.85.x/24/3115405rewritten
195.162.85.x/24/3015405rewritten
195.162.85.x/24/2915405rewritten
195.162.85.x/24/2815405rewritten
195.162.85.x/24/2715405rewritten
195.162.85.x/24/2615405rewritten
195.162.85.x/24/2515405rewritten
195.162.85.x/24/2415405rewritten
195.162.84.x/24/2315405rewritten
195.162.87.x/24/2215405rewritten
195.162.81.x/24/2135004natblock
195.162.93.x/24/20UNROUTEDrewritten
195.162.69.x/24/1957043rewritten
195.162.117.x/24/1831655rewritten
195.162.21.x/24/1734790rewritten
195.162.213.x/24/166848rewritten
195.163.85.x/24/155400rewritten
195.160.85.x/24/148703rewritten
195.166.85.x/24/133549rewritten
195.170.85.x/24/121901rewritten
195.178.85.x/24/112852rewritten
195.130.85.x/24/105408rewritten
195.226.85.x/24/99197rewritten
195.34.85.x/24/842251rewritten

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 6 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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