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Session Report

Summary:
Test run at: 2017-06-30 01:22:53 GMT
Client Prefix (v4): 202.111.175.x/24
Client AS (v4): 4837 (CHINA169-Backbone)
IPv4 Probes: 117
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /22
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 (202.111.175.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
202.111.175.x/24/314837yes
202.111.175.x/24/304837yes
202.111.175.x/24/294837yes
202.111.175.x/24/284837yes
202.111.175.x/24/274837yes
202.111.175.x/24/264837yes
202.111.175.x/24/254837yes
202.111.175.x/24/244837yes
202.111.174.x/24/234837no
202.111.173.x/24/224837yes
202.111.171.x/24/214837no
202.111.167.x/24/204837no
202.111.191.x/24/194837no
202.111.143.x/24/184837no
202.111.239.x/24/174134no
202.111.47.x/24/164809no
202.110.175.x/24/154134no
202.109.175.x/24/144134no
202.107.175.x/24/134134no
202.103.175.x/24/124134no
202.127.175.x/24/1124396no
202.79.175.x/24/101221no
202.47.175.x/24/99833no
202.239.175.x/24/82516no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

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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