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Session Report

Summary:
Test run at: 2018-09-04 12:32:35 GMT
Client Prefix (v4): 203.178.156.x/24
Client AS (v4): 2500 (WIDE-BB)
IPv4 Probes: 124
Client Prefix (v6): 2001:200:xx::/40
Client AS (v6): 2500 (WIDE-BB)
IPv6 Probes: 82
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable blockedreceived
Largest spoofable neighbor prefix length /23/16

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 (203.178.156.x/24) can spoof 511 neighboring addresses (within your /23 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
203.178.156.x/24/312500yes
203.178.156.x/24/302500yes
203.178.156.x/24/292500yes
203.178.156.x/24/282500yes
203.178.156.x/24/272500yes
203.178.156.x/24/262500yes
203.178.156.x/24/252500yes
203.178.156.x/24/242500yes
203.178.157.x/24/232500yes
203.178.158.x/24/222500no
203.178.152.x/24/212500no
203.178.148.x/24/202500no
203.178.140.x/24/192500no
203.178.188.x/24/182500no
203.178.220.x/24/172500no
203.178.28.x/24/16UNROUTEDno
203.179.156.x/24/15UNROUTEDno
203.176.156.x/24/1438874no
203.182.156.x/24/134673no
203.186.156.x/24/129269no
203.162.156.x/24/1145899no
203.146.156.x/24/104750no
203.242.156.x/24/97557no
203.50.156.x/24/81221no

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 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
2001:48d0:101:501:ec4:7aff:fea8:71a82001:48d0:101:501::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242yes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:200:xx::/40/1202500yes
2001:200:xx::/40/1122500yes
2001:200:xx::/40/1042500yes
2001:200:xx::/40/962500yes
2001:200:xx::/40/882500yes
2001:200:xx::/40/802500yes
2001:200:xx::/40/722500yes
2001:200:xx::/40/642500yes
2001:200:xx::/40/562500yes
2001:200:xx::/40/482500yes
2001:200:xx::/40/402500yes
2001:200:80xx::/40/322500yes
2001:280:xx::/40/24UNROUTEDyes
2001:8200:xx::/40/161221yes

Meaning of status in Received column:

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