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Session Report

Summary:
Test run at: 2017-08-06 23:57:39 GMT
Client Prefix (v4): 203.55.174.x/24
Client AS (v4): 9268 (OVERTHEWIRE-AS-AP)
IPv4 Probes: 131
Client Prefix (v6): 2402:c00:xx::/40
Client AS (v6): 9268 (OVERTHEWIRE-AS-AP)
IPv6 Probes: 79
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.
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 (203.55.174.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
203.55.174.x/24/319268sendto
203.55.174.x/24/309268sendto
203.55.174.x/24/299268sendto
203.55.174.x/24/289268sendto
203.55.174.x/24/279268sendto
203.55.174.x/24/269268sendto
203.55.174.x/24/259268sendto
203.55.174.x/24/249268sendto
203.55.175.x/24/239268sendto
203.55.172.x/24/227474sendto
203.55.170.x/24/21UNROUTEDsendto
203.55.166.x/24/2024130sendto
203.55.190.x/24/19UNROUTEDsendto
203.55.142.x/24/1824446sendto
203.55.238.x/24/17UNROUTEDsendto
203.55.46.x/24/164739sendto
203.54.174.x/24/151221sendto
203.53.174.x/24/141221sendto
203.51.174.x/24/131221sendto
203.63.174.x/24/122764sendto
203.39.174.x/24/111221sendto
203.23.174.x/24/10UNROUTEDsendto
203.119.174.x/24/9UNROUTEDsendto
203.183.174.x/24/84694sendto

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 probes:
Spoofed source addressDestinationReceived
2001:4978:1fb:6400::d22001:388:1:5001:21c:c0ff:fea2:4a3ano
2001:49aa:111:aa00::112001:388:1:5001:21c:c0ff:fea2:4a3ano
fd11:1111:1111::11112001:388:1:5001:21c:c0ff:fea2:4a3ano
2001:4978:1fb:6400::d22001:410:90ff::5no
2001:49aa:111:aa00::112001:410:90ff::5no
fd11:1111:1111::11112001:410:90ff::5no
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
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:4978:1fb: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
2001:4978:1fb:6400::d22001:708:40:2001:21c:c0ff:fea2:4c5cno
2001:49aa:111:aa00::112001:708:40:2001:21c:c0ff:fea2:4c5cno
fd11:1111:1111::11112001:708:40:2001:21c:c0ff:fea2:4c5cno
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2402:c00:xx::/40/1209268sendto
2402:c00:xx::/40/1129268sendto
2402:c00:xx::/40/1049268sendto
2402:c00:xx::/40/969268sendto
2402:c00:xx::/40/889268sendto
2402:c00:xx::/40/809268sendto
2402:c00:xx::/40/729268sendto
2402:c00:xx::/40/649268sendto
2402:c00:xx::/40/569268sendto
2402:c00:xx::/40/489268sendto
2402:c00:xx::/40/409268sendto
2402:c00:80xx::/40/329268sendto
2402:c80:xx::/40/24UNROUTEDsendto
2402:8c00: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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