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Session Report

Summary:
Test run at: 2018-10-09 16:47:05 GMT
Client Prefix (v4): 137.164.83.x/24
Client AS (v4): 2152 (CSUNET-NW)
IPv4 Probes: 124
Client Prefix (v6): 2607:f380:axx::/40
Client AS (v6): 2152 (CSUNET-NW)
IPv6 Probes: 82
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 /21/48
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 (137.164.83.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
137.164.83.x/24/312152yes
137.164.83.x/24/302152yes
137.164.83.x/24/292152yes
137.164.83.x/24/282152yes
137.164.83.x/24/272152yes
137.164.83.x/24/262152yes
137.164.83.x/24/252152yes
137.164.83.x/24/242152yes
137.164.82.x/24/232152yes
137.164.81.x/24/222152yes
137.164.87.x/24/212152yes
137.164.91.x/24/202152no
137.164.67.x/24/192152no
137.164.115.x/24/182152no
137.164.19.x/24/172152no
137.164.211.x/24/162152no
137.165.83.x/24/1511399no
137.166.83.x/24/1458877no
137.160.83.x/24/133549no
137.172.83.x/24/12UNROUTEDno
137.180.83.x/24/1111003no
137.132.83.x/24/107472no
137.228.83.x/24/9127no
137.36.83.x/24/811351no

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).
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::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2607:f380:axx::/40/1202152yes
2607:f380:axx::/40/1122152yes
2607:f380:axx::/40/1042152yes
2607:f380:axx::/40/962152yes
2607:f380:axx::/40/882152yes
2607:f380:axx::/40/802152yes
2607:f380:axx::/40/722152yes
2607:f380:axx::/40/642152yes
2607:f380:axx::/40/562152yes
2607:f380:axx::/40/482152yes
2607:f380:axx::/40/402152no
2607:f380:8axx::/40/322152no
2607:f300:axx::/40/24UNROUTEDno
2607:7380:axx::/40/16UNROUTEDno

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)
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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