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Session Report

Summary:
Test run at: 2020-07-10 18:09:53 GMT
Client Prefix (v4): 170.244.201.x/24
Client AS (v4): 266013
IPv4 Probes: 75
Client Prefix (v6): 2804:3920:82xx::/40
Client AS (v6): 266013
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable receivedreceived
Largest spoofable neighbor prefix length /14/16
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.

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 (170.244.201.x/24) can spoof 262143 neighboring addresses (within your /14 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
170.244.201.x/24/31266013yes
170.244.201.x/24/30266013yes
170.244.201.x/24/29266013yes
170.244.201.x/24/28266013yes
170.244.201.x/24/27266013yes
170.244.201.x/24/26266013natblock
170.244.201.x/24/25266013yes
170.244.201.x/24/24266013natblock
170.244.200.x/24/23266013yes
170.244.203.x/24/22266013yes
170.244.205.x/24/21266509yes
170.244.193.x/24/20262809yes
170.244.217.x/24/19263496yes
170.244.233.x/24/18266514yes
170.244.137.x/24/17266518yes
170.244.73.x/24/16266498yes
170.245.201.x/24/15263998yes
170.246.201.x/24/1453137yes
170.240.201.x/24/13UNROUTEDnatblock
170.252.201.x/24/12UNROUTEDnatblock
170.228.201.x/24/11UNROUTEDnatblock
170.212.201.x/24/10UNROUTEDnatblock
170.180.201.x/24/9UNROUTEDnatblock
170.116.201.x/24/8UNROUTEDnatblock

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)
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 able to spoof routable, non-adjacent source addresses through the first 10 IP hop(s).
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::242yes
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
2001:48d0:101:501::1592001:48d0:101:501::247yes
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
2001:48d0:101:501::1592001:610:510:115:192:42:115:98yes
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:45a6yes
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::1592001:770:18:7:225:90ff:fe0c:acb4yes
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
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fyes
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fyes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:3920:82xx::/40/120266013yes
2804:3920:82xx::/40/112266013yes
2804:3920:82xx::/40/104266013yes
2804:3920:82xx::/40/96266013yes
2804:3920:82xx::/40/88266013yes
2804:3920:82xx::/40/80266013yes
2804:3920:82xx::/40/72266013yes
2804:3920:82xx::/40/64266013yes
2804:3920:82xx::/40/56266013yes
2804:3920:82xx::/40/48266013yes
2804:3920:82xx::/40/40266013yes
2804:3920:2xx::/40/32UNROUTEDyes
2804:39a0:82xx::/40/24UNROUTEDyes
2804:b920:82xx::/40/16UNROUTEDyes

Meaning of status in Received column:

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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