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Session Report

Summary:
Test run at: 2017-03-23 13:07:00 GMT
Client Prefix (v4): 62.207.81.x/24
Client AS (v4): 1136 (KPN)
IPv4 Probes: 105
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length /29
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 (62.207.81.x/24) can spoof 7 neighboring addresses (within your /29 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
62.207.81.x/24/311136yes
62.207.81.x/24/301136yes
62.207.81.x/24/291136yes
62.207.81.x/24/281136natblock
62.207.81.x/24/271136natblock
62.207.81.x/24/261136natblock
62.207.81.x/24/251136natblock
62.207.81.x/24/241136natblock
62.207.80.x/24/231136natblock
62.207.83.x/24/221136natblock
62.207.85.x/24/211136natblock
62.207.89.x/24/201136natblock
62.207.65.x/24/191136natblock
62.207.113.x/24/181136natblock
62.207.17.x/24/171136natblock
62.207.209.x/24/161136natblock
62.206.81.x/24/1520676natblock
62.205.81.x/24/146848natblock
62.203.81.x/24/133303natblock
62.199.81.x/24/123308natblock
62.223.81.x/24/118918natblock
62.239.81.x/24/102856natblock
62.143.81.x/24/96830natblock
62.79.81.x/24/89158natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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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