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Session Report

Summary:
Test run at: 2017-07-19 01:43:20 GMT
Client Prefix (v4): 202.12.30.x/24
Client AS (v4): 2515 (JPNIC)
IPv4 Probes: 117
Client Prefix (v6): 2001:dc2:10xx::/40
Client AS (v6): 2515 (JPNIC)
IPv6 Probes: 77
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length nonenone

Meaning of result status in column:

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 (202.12.30.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
202.12.30.x/24/312515natblock
202.12.30.x/24/302515natblock
202.12.30.x/24/292515natblock
202.12.30.x/24/282515natblock
202.12.30.x/24/272515natblock
202.12.30.x/24/262515natblock
202.12.30.x/24/252515natblock
202.12.30.x/24/242515natblock
202.12.31.x/24/2318366natblock
202.12.28.x/24/224777natblock
202.12.26.x/24/2110094natblock
202.12.22.x/24/20UNROUTEDnatblock
202.12.14.x/24/1924286natblock
202.12.62.x/24/18UNROUTEDnatblock
202.12.94.x/24/1717617natblock
202.12.158.x/24/161221natblock
202.13.30.x/24/15UNROUTEDnatblock
202.14.30.x/24/1410022natblock
202.8.30.x/24/1338722natblock
202.4.30.x/24/12UNROUTEDnatblock
202.28.30.x/24/114621natblock
202.44.30.x/24/10UNROUTEDnatblock
202.76.30.x/24/94058natblock
202.140.30.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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
IPv6 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.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:dc2:10xx::/40/1202515natblock
2001:dc2:10xx::/40/1122515natblock
2001:dc2:10xx::/40/1042515natblock
2001:dc2:10xx::/40/962515natblock
2001:dc2:10xx::/40/882515natblock
2001:dc2:10xx::/40/802515natblock
2001:dc2:10xx::/40/722515natblock
2001:dc2:10xx::/40/642515natblock
2001:dc2:10xx::/40/562515natblock
2001:dc2:10xx::/40/482515natblock
2001:dc2:10xx::/40/402515natblock
2001:dc2:90xx::/40/322515natblock
2001:d42:10xx::/40/24UNROUTEDnatblock
2001:8dc2:10xx::/40/161221natblock

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.
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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