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Session Report

Summary:
Test run at: 2021-04-04 07:22:08 GMT
Client Prefix (v4): 90.190.38.x/24
Client AS (v4): 3249 (ESTPAK)
IPv4 Probes: 66
Client Prefix (v6): 2001:7d0:83xx::/40
Client AS (v6): 3249 (ESTPAK)
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 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.
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 (90.190.38.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
90.190.38.x/24/313249natblock
90.190.38.x/24/303249natblock
90.190.38.x/24/293249natblock
90.190.38.x/24/283249natblock
90.190.38.x/24/273249natblock
90.190.38.x/24/263249natblock
90.190.38.x/24/253249natblock
90.190.38.x/24/243249natblock
90.190.39.x/24/233249natblock
90.190.36.x/24/223249natblock
90.190.34.x/24/213249natblock
90.190.46.x/24/203249natblock
90.190.54.x/24/193249natblock
90.190.6.x/24/183249natblock
90.190.102.x/24/173249natblock
90.190.166.x/24/163249natblock
90.191.38.x/24/153249natblock
90.188.38.x/24/1412389natblock
90.186.38.x/24/133209natblock
90.182.38.x/24/125610natblock
90.174.38.x/24/1112479natblock
90.158.38.x/24/109021natblock
90.254.38.x/24/95378natblock
90.62.38.x/24/83215natblock

Meaning of status in Received column:

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 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::1592001:630:212:225:225:90ff: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
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2001:7d0:83xx::/40/1203249yes
2001:7d0:83xx::/40/1123249yes
2001:7d0:83xx::/40/1043249yes
2001:7d0:83xx::/40/963249yes
2001:7d0:83xx::/40/883249yes
2001:7d0:83xx::/40/803249yes
2001:7d0:83xx::/40/723249yes
2001:7d0:83xx::/40/643249yes
2001:7d0:83xx::/40/563249yes
2001:7d0:83xx::/40/483249no
2001:7d0:83xx::/40/403249no
2001:7d0:3xx::/40/323249no
2001:750:83xx::/40/2415589no
2001:87d0:83xx::/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:
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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