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Session Report

Summary:
Test run at: 2017-02-25 00:59:52 GMT
Client Prefix (v4): 116.37.0.x/24
Client AS (v4): 17858 (POWERVIS-AS-KR)
IPv4 Probes: 91
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /25
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 (116.37.0.x/24) can spoof 127 neighboring addresses (within your /25 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
116.37.0.x/24/3117858yes
116.37.0.x/24/3017858yes
116.37.0.x/24/2917858yes
116.37.0.x/24/2817858yes
116.37.0.x/24/2717858yes
116.37.0.x/24/2617858yes
116.37.0.x/24/2517858yes
116.37.0.x/24/2417858natblock
116.37.1.x/24/2317858natblock
116.37.2.x/24/2217858natblock
116.37.4.x/24/2117858natblock
116.37.8.x/24/2017858natblock
116.37.16.x/24/1917858natblock
116.37.32.x/24/1817858natblock
116.37.64.x/24/1717858natblock
116.37.128.x/24/1617858natblock
116.36.0.x/24/1517858natblock
116.39.0.x/24/1417858natblock
116.33.0.x/24/1317858natblock
116.45.0.x/24/1217858natblock
116.53.0.x/24/114134natblock
116.5.0.x/24/104134natblock
116.101.0.x/24/924086natblock
116.165.0.x/24/8UNROUTEDnatblock

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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