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Session Report

Summary:
Test run at: 2017-11-27 13:18:46 GMT
Client Prefix (v4): 204.110.188.x/24
Client AS (v4): 393837 (VNTX)
IPv4 Probes: 102
Client Prefix (v6): 2606:1c80:xx::/40
Client AS (v6): 393837 (VNTX)
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable rewrittenblocked
Largest spoofable neighbor prefix length none/32

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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
204.110.188.x/24/31393837rewritten
204.110.188.x/24/30393837rewritten
204.110.188.x/24/29393837rewritten
204.110.188.x/24/28393837rewritten
204.110.188.x/24/27393837rewritten
204.110.188.x/24/26393837rewritten
204.110.188.x/24/25393837rewritten
204.110.188.x/24/24393837rewritten
204.110.189.x/24/23393837rewritten
204.110.190.x/24/22393837rewritten
204.110.184.x/24/21UNROUTEDrewritten
204.110.180.x/24/20UNROUTEDrewritten
204.110.172.x/24/1922838rewritten
204.110.156.x/24/18UNROUTEDrewritten
204.110.252.x/24/17UNROUTEDrewritten
204.110.60.x/24/1633576rewritten
204.111.188.x/24/154922rewritten
204.108.188.x/24/1422192rewritten
204.106.188.x/24/13UNROUTEDrewritten
204.102.188.x/24/122152rewritten
204.126.188.x/24/115078rewritten
204.78.188.x/24/1031923rewritten
204.46.188.x/24/914298rewritten
204.238.188.x/24/8UNROUTEDrewritten

Meaning of status in Received column:

rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 4 IP hop(s).
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::d22001:410:102:1::78no
2001:49aa:111:aa00::112001:410:102:1::78no
fd11:1111:1111::11112001:410:102:1::78no
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::d22001:630:212:225:225:90ff: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
2001:4978:1fb: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
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2606:1c80:xx::/40/120393837yes
2606:1c80:xx::/40/112393837yes
2606:1c80:xx::/40/104393837yes
2606:1c80:xx::/40/96393837yes
2606:1c80:xx::/40/88393837yes
2606:1c80:xx::/40/80393837yes
2606:1c80:xx::/40/72393837yes
2606:1c80:xx::/40/64393837yes
2606:1c80:xx::/40/56393837yes
2606:1c80:xx::/40/48393837yes
2606:1c80:xx::/40/40393837yes
2606:1c80:80xx::/40/32393837yes
2606:1c00:xx::/40/2411714no
2606:9c80:xx::/40/16394530no

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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