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Session Report

Summary:
Test run at: 2022-08-17 05:04:26 GMT
Client Prefix (v4): 130.217.250.x/24
Client AS (v4): 681 (ERX-KAWAIHIKO-1)
IPv4 Probes: 60
Client Prefix (v6): 2001:df0:xx::/40
Client AS (v6): 681 (ERX-KAWAIHIKO-1)
IPv6 Probes: 52
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 /22/64
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.
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 (130.217.250.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
130.217.250.x/24/31681yes
130.217.250.x/24/30681yes
130.217.250.x/24/29681yes
130.217.250.x/24/28681yes
130.217.250.x/24/27681yes
130.217.250.x/24/26681yes
130.217.250.x/24/25681yes
130.217.250.x/24/24681no
130.217.251.x/24/23681no
130.217.248.x/24/22681yes
130.217.254.x/24/21681no
130.217.242.x/24/20681no
130.217.234.x/24/19681no
130.217.218.x/24/18681no
130.217.186.x/24/17681no
130.217.122.x/24/16681no
130.216.250.x/24/159431no
130.219.250.x/24/1411094no
130.221.250.x/24/1385no
130.209.250.x/24/12786no
130.201.250.x/24/11UNROUTEDno
130.249.250.x/24/10UNROUTEDno
130.153.250.x/24/92907no
130.89.250.x/24/81133no

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
2001:df0:xx::/40/120681yes
2001:df0:xx::/40/112681yes
2001:df0:xx::/40/104681yes
2001:df0:xx::/40/96681yes
2001:df0:xx::/40/88681yes
2001:df0:xx::/40/80681yes
2001:df0:xx::/40/72681yes
2001:df0:xx::/40/64681yes
2001:df0:xx::/40/56681no
2001:df0:xx::/40/48681no
2001:df0:xx::/40/40UNROUTEDno
2001:df0:80xx::/40/32UNROUTEDno
2001:d70:xx::/40/247671no
2001:8df0:xx::/40/161221no

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:
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