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Session Report

Summary:
Test run at: 2017-08-01 12:52:55 GMT
Client Prefix (v4): 200.50.71.x/24
Client AS (v4): 11139 (CWC-ROC-11139)
IPv4 Probes: 132
Client Prefix (v6): 2001:504:xx::/40
Client AS (v6): 14432 (GREX)
IPv6 Probes: 77
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownreceived
Routable unknownreceived
Largest spoofable neighbor prefix length none/16
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 (200.50.71.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
200.50.71.x/24/3111139natblock
200.50.71.x/24/3011139natblock
200.50.71.x/24/2911139natblock
200.50.71.x/24/2811139natblock
200.50.71.x/24/2711139natblock
200.50.71.x/24/2611139natblock
200.50.71.x/24/2511139natblock
200.50.71.x/24/2411139natblock
200.50.70.x/24/2314813natblock
200.50.69.x/24/2211139natblock
200.50.67.x/24/2111139natblock
200.50.79.x/24/2014813natblock
200.50.87.x/24/1914813natblock
200.50.103.x/24/187418natblock
200.50.7.x/24/1711992natblock
200.50.199.x/24/16UNROUTEDnatblock
200.51.71.x/24/1510834natblock
200.48.71.x/24/146147natblock
200.54.71.x/24/1316629natblock
200.58.71.x/24/1227839natblock
200.34.71.x/24/116503natblock
200.18.71.x/24/102716natblock
200.114.71.x/24/9UNROUTEDnatblock
200.178.71.x/24/84230natblock

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 probes:
Spoofed source addressDestinationReceived
2001:4978:1fb:6400::d22001:388:1:5001:21c:c0ff:fea2:4a3ayes
2001:49aa:111:aa00::112001:388:1:5001:21c:c0ff:fea2:4a3ayes
fd11:1111:1111::11112001:388:1:5001:21c:c0ff:fea2:4a3ayes
2001:4978:1fb:6400::d22001:410:102:1::78yes
2001:49aa:111:aa00::112001:410:102:1::78yes
fd11:1111:1111::11112001:410:102:1::78yes
2001:4978:1fb:6400::d22001:410:90ff::5yes
2001:49aa:111:aa00::112001:410:90ff::5yes
fd11:1111:1111::11112001:410:90ff::5yes
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
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98yes
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::d22001:630:212:225:225:90ff:fe0c:45a6yes
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:708:40:2001:21c:c0ff:fea2:4c5cyes
2001:49aa:111:aa00::112001:708:40:2001:21c:c0ff:fea2:4c5cyes
fd11:1111:1111::11112001:708:40:2001:21c:c0ff:fea2:4c5cno
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4yes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:504:xx::/40/12014432yes
2001:504:xx::/40/11214432yes
2001:504:xx::/40/10414432yes
2001:504:xx::/40/9614432yes
2001:504:xx::/40/8814432yes
2001:504:xx::/40/8014432yes
2001:504:xx::/40/7214432yes
2001:504:xx::/40/6414432yes
2001:504:xx::/40/5614432yes
2001:504:xx::/40/4814432yes
2001:504:xx::/40/40UNROUTEDyes
2001:504:80xx::/40/32UNROUTEDyes
2001:584:xx::/40/24UNROUTEDyes
2001:8504: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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