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Session Report

Summary:
Test run at: 2022-06-14 02:14:56 GMT
Client Prefix (v4): 170.231.72.x/24
Client AS (v4): 53112
IPv4 Probes: 60
Client Prefix (v6): 2804:d0c:80xx::/40
Client AS (v6): 53112
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/56
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.
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)
Network is unreachable (101)

IPv4 Adjacent Netblock Testing:

Your host (170.231.72.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.231.72.x/24/3153112rewritten
170.231.72.x/24/3053112rewritten
170.231.72.x/24/2953112rewritten
170.231.72.x/24/2853112rewritten
170.231.72.x/24/2753112rewritten
170.231.72.x/24/2653112rewritten
170.231.72.x/24/2553112rewritten
170.231.72.x/24/2453112rewritten
170.231.73.x/24/2353112rewritten
170.231.74.x/24/2253112rewritten
170.231.76.x/24/2127833rewritten
170.231.64.x/24/20265045rewritten
170.231.88.x/24/1953196rewritten
170.231.104.x/24/18262983rewritten
170.231.8.x/24/17262773rewritten
170.231.200.x/24/16264943rewritten
170.230.72.x/24/151239rewritten
170.229.72.x/24/14UNROUTEDrewritten
170.227.72.x/24/13UNROUTEDrewritten
170.239.72.x/24/12266350rewritten
170.247.72.x/24/1152544rewritten
170.199.72.x/24/107122rewritten
170.167.72.x/24/9UNROUTEDrewritten
170.103.72.x/24/8398025rewritten

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 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.
Network is unreachable (101)
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
2804:d0c:80xx::/40/12053112yes
2804:d0c:80xx::/40/11253112yes
2804:d0c:80xx::/40/10453112yes
2804:d0c:80xx::/40/9653112yes
2804:d0c:80xx::/40/8853112yes
2804:d0c:80xx::/40/8053112yes
2804:d0c:80xx::/40/7253112yes
2804:d0c:80xx::/40/6453112yes
2804:d0c:80xx::/40/5653112yes
2804:d0c:80xx::/40/4853112no
2804:d0c:80xx::/40/4053112no
2804:d0c:xx::/40/3253112no
2804:d8c:80xx::/40/2452638no
2804:8d0c:80xx::/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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