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Session Report

Summary:
Test run at: 2022-04-13 15:22:23 GMT
Client Prefix (v4): 137.164.3.x/24
Client AS (v4): 2152 (CSUNET-NW)
IPv4 Probes: 60
Client Prefix (v6): 2607:f380:xx::/40
Client AS (v6): 2152 (CSUNET-NW)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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.

Warnings:

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
137.164.3.x/24/312152sendto
137.164.3.x/24/302152sendto
137.164.3.x/24/292152sendto
137.164.3.x/24/282152sendto
137.164.3.x/24/272152sendto
137.164.3.x/24/262152sendto
137.164.3.x/24/252152sendto
137.164.3.x/24/242152sendto
137.164.2.x/24/232152sendto
137.164.1.x/24/222152sendto
137.164.7.x/24/212152sendto
137.164.11.x/24/202152sendto
137.164.19.x/24/192152sendto
137.164.35.x/24/182152sendto
137.164.67.x/24/172152sendto
137.164.131.x/24/162152sendto
137.165.3.x/24/1511399sendto
137.166.3.x/24/1458877sendto
137.160.3.x/24/13UNROUTEDsendto
137.172.3.x/24/12UNROUTEDsendto
137.180.3.x/24/1111003sendto
137.132.3.x/24/107472sendto
137.228.3.x/24/9127sendto
137.36.3.x/24/811351sendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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::1592001:48d0:101:501::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
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2607:f380:xx::/40/1202152sendto
2607:f380:xx::/40/1122152sendto
2607:f380:xx::/40/1042152sendto
2607:f380:xx::/40/962152sendto
2607:f380:xx::/40/882152sendto
2607:f380:xx::/40/802152sendto
2607:f380:xx::/40/722152sendto
2607:f380:xx::/40/642152sendto
2607:f380:xx::/40/562152sendto
2607:f380:xx::/40/482152sendto
2607:f380:xx::/40/402152sendto
2607:f380:80xx::/40/322152sendto
2607:f300:xx::/40/24UNROUTEDsendto
2607:7380:xx::/40/16UNROUTEDsendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.
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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