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Session Report

Summary:
Test run at: 2017-11-21 08:12:37 GMT
Client Prefix (v4): 202.214.65.x/24
Client AS (v4): 2497 (IIJ)
IPv4 Probes: 102
Client Prefix (v6): 2001:240:14xx::/40
Client AS (v6): 2497 (IIJ)
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 (202.214.65.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
202.214.65.x/24/312497natblock
202.214.65.x/24/302497natblock
202.214.65.x/24/292497natblock
202.214.65.x/24/282497natblock
202.214.65.x/24/272497natblock
202.214.65.x/24/262497natblock
202.214.65.x/24/252497natblock
202.214.65.x/24/242497natblock
202.214.64.x/24/232497natblock
202.214.67.x/24/222497natblock
202.214.69.x/24/212497natblock
202.214.73.x/24/202497natblock
202.214.81.x/24/192497natblock
202.214.97.x/24/182497natblock
202.214.1.x/24/172497natblock
202.214.193.x/24/162497natblock
202.215.65.x/24/152519natblock
202.212.65.x/24/142514natblock
202.210.65.x/24/13UNROUTEDnatblock
202.222.65.x/24/124711natblock
202.198.65.x/24/114538natblock
202.246.65.x/24/10UNROUTEDnatblock
202.150.65.x/24/9UNROUTEDnatblock
202.86.65.x/24/817814natblock

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 1 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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