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Session Report

Summary:
Test run at: 2017-06-16 18:27:22 GMT
Client Prefix (v4): 188.4.247.x/24
Client AS (v4): 1241 (FORTHNET-GR)
IPv4 Probes: 118
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
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.
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 (188.4.247.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
188.4.247.x/24/311241natblock
188.4.247.x/24/301241natblock
188.4.247.x/24/291241natblock
188.4.247.x/24/281241natblock
188.4.247.x/24/271241natblock
188.4.247.x/24/261241natblock
188.4.247.x/24/251241natblock
188.4.247.x/24/241241natblock
188.4.246.x/24/231241natblock
188.4.245.x/24/221241natblock
188.4.243.x/24/211241natblock
188.4.255.x/24/201241natblock
188.4.231.x/24/191241natblock
188.4.215.x/24/181241natblock
188.4.183.x/24/171241natblock
188.4.119.x/24/161241natblock
188.5.247.x/24/155432natblock
188.6.247.x/24/145483natblock
188.0.247.x/24/13UNROUTEDnatblock
188.12.247.x/24/123269natblock
188.20.247.x/24/118447natblock
188.36.247.x/24/105483natblock
188.68.247.x/24/9197226natblock
188.132.247.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 able to spoof routable, non-adjacent source addresses through the first 2 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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