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Session Report

Summary:
Test run at: 2020-04-10 02:33:10 GMT
Client Prefix (v4): 131.255.117.x/24
Client AS (v4): 264478
IPv4 Probes: 75
Client Prefix (v6): 2804:2038:80xx::/40
Client AS (v6): 264478
IPv6 Probes: 72
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenreceived
Routable receivedreceived
Largest spoofable neighbor prefix length /9/16
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 (131.255.117.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.255.117.x/24/31264478yes
131.255.117.x/24/30264478yes
131.255.117.x/24/29264478yes
131.255.117.x/24/28264478yes
131.255.117.x/24/27264478yes
131.255.117.x/24/26264478yes
131.255.117.x/24/25264478yes
131.255.117.x/24/24264478yes
131.255.116.x/24/23264478yes
131.255.119.x/24/22264478yes
131.255.113.x/24/21264487yes
131.255.125.x/24/20264480yes
131.255.101.x/24/1928165yes
131.255.85.x/24/18264471yes
131.255.53.x/24/17262675yes
131.255.245.x/24/16262962yes
131.254.117.x/24/151938yes
131.253.117.x/24/148070yes
131.251.117.x/24/13786yes
131.247.117.x/24/125661yes
131.239.117.x/24/1114985yes
131.223.117.x/24/10UNROUTEDnatblock
131.191.117.x/24/914677yes
131.127.117.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:acb4yes
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4yes
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
2001:48d0:101:501::1592607:f278:2:13:ba27:ebff:fe3f:b21eyes
2001:4978:1fb:6400::d22607:f278:2:13:ba27:ebff:fe3f:b21eyes
2001:49aa:111:aa00::112607:f278:2:13:ba27:ebff:fe3f:b21eyes
fd11:1111:1111::11112607:f278:2:13:ba27:ebff:fe3f:b21eyes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:2038:80xx::/40/120264478yes
2804:2038:80xx::/40/112264478yes
2804:2038:80xx::/40/104264478yes
2804:2038:80xx::/40/96264478yes
2804:2038:80xx::/40/88264478yes
2804:2038:80xx::/40/80264478yes
2804:2038:80xx::/40/72264478yes
2804:2038:80xx::/40/64264478yes
2804:2038:80xx::/40/56264478yes
2804:2038:80xx::/40/48264478yes
2804:2038:80xx::/40/40264478yes
2804:2038:xx::/40/32264478yes
2804:20b8:80xx::/40/24264510yes
2804:a038:80xx::/40/16UNROUTEDyes

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)
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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