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Session Report

Summary:
Test run at: 2021-09-25 03:38:49 GMT
Client Prefix (v4): 170.81.248.x/24
Client AS (v4): 266439
IPv4 Probes: 66
Client Prefix (v6): 2804:37d8:xx::/40
Client AS (v6): 266439
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length /28/32

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.
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 (170.81.248.x/24) can spoof 15 neighboring addresses (within your /28 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.81.248.x/24/31266439yes
170.81.248.x/24/30266439yes
170.81.248.x/24/29266439yes
170.81.248.x/24/28266439yes
170.81.248.x/24/27266439no
170.81.248.x/24/26266439no
170.81.248.x/24/25266439no
170.81.248.x/24/24266439no
170.81.249.x/24/23266439no
170.81.250.x/24/22266439no
170.81.252.x/24/21264842no
170.81.240.x/24/20269803no
170.81.232.x/24/19266425no
170.81.216.x/24/1828134no
170.81.184.x/24/17264084no
170.81.120.x/24/16266406no
170.80.248.x/24/15UNROUTEDno
170.83.248.x/24/1452937no
170.85.248.x/24/13UNROUTEDno
170.89.248.x/24/1223241no
170.65.248.x/24/1114201no
170.113.248.x/24/10UNROUTEDno
170.17.248.x/24/93303no
170.209.248.x/24/8UNROUTEDno

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)

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.

  

  
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
2804:37d8:xx::/40/120266439yes
2804:37d8:xx::/40/112266439yes
2804:37d8:xx::/40/104266439yes
2804:37d8:xx::/40/96266439yes
2804:37d8:xx::/40/88266439yes
2804:37d8:xx::/40/80266439yes
2804:37d8:xx::/40/72266439yes
2804:37d8:xx::/40/64266439yes
2804:37d8:xx::/40/56266439yes
2804:37d8:xx::/40/48266439yes
2804:37d8:xx::/40/40266439yes
2804:37d8:80xx::/40/32266439yes
2804:3758:xx::/40/24UNROUTEDno
2804:b7d8:xx::/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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