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Session Report

Summary:
Test run at: 2023-08-19 12:10:14 GMT
Client Prefix (v4): 107.11.0.x/24
Client AS (v4): 10796 (TWC-10796-MIDWEST)
IPv4 Probes: 63
Client Prefix (v6): 2603:6011:68xx::/40
Client AS (v6): 10796 (TWC-10796-MIDWEST)
IPv6 Probes: 56
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/64
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 (107.11.0.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
107.11.0.x/24/3110796rewritten
107.11.0.x/24/3010796rewritten
107.11.0.x/24/2910796rewritten
107.11.0.x/24/2810796rewritten
107.11.0.x/24/2710796rewritten
107.11.0.x/24/2610796rewritten
107.11.0.x/24/2510796rewritten
107.11.0.x/24/2410796rewritten
107.11.1.x/24/2310796rewritten
107.11.2.x/24/2210796rewritten
107.11.4.x/24/2110796rewritten
107.11.8.x/24/2010796rewritten
107.11.16.x/24/1910796rewritten
107.11.32.x/24/1810796rewritten
107.11.64.x/24/1710796rewritten
107.11.128.x/24/1610796rewritten
107.10.0.x/24/1510796rewritten
107.9.0.x/24/1410796rewritten
107.15.0.x/24/1311426rewritten
107.3.0.x/24/127922rewritten
107.27.0.x/24/11UNROUTEDrewritten
107.43.0.x/24/10UNROUTEDrewritten
107.75.0.x/24/97018rewritten
107.139.0.x/24/87018rewritten

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 1 IP hop(s).
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
2603:6011:68xx::/40/12010796yes
2603:6011:68xx::/40/11210796yes
2603:6011:68xx::/40/10410796yes
2603:6011:68xx::/40/9610796yes
2603:6011:68xx::/40/8810796yes
2603:6011:68xx::/40/8010796yes
2603:6011:68xx::/40/7210796yes
2603:6011:68xx::/40/6410796yes
2603:6011:68xx::/40/5610796no
2603:6011:68xx::/40/4810796no
2603:6011:68xx::/40/4010796no
2603:6011:e8xx::/40/3210796no
2603:6091:68xx::/40/24UNROUTEDno
2603:e011:68xx::/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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